The Indus Waters Treaty: When Diplomacy Meets Arbitration

Few international agreements demonstrate the power (and limitations) of international dispute resolution quite like the Indus Waters Treaty (IWT) between India and Pakistan.

Signed in 1960, the Treaty was the product of almost a decade of negotiations facilitated by the World Bank. More than sixty years later, it has found itself at the centre of renewed tensions between two states whose relationship has been defined by conflict, competing territorial claims and deep political distrust. In August 2026, a Court of Arbitration constituted under the Treaty ruled that India could not unilaterally place the Treaty “in abeyance”, adding a new chapter to one of the most remarkable examples of international water diplomacy.

From Partition to negotiation

The origins of the dispute lie in the partition of British India in 1947. The Indus river system crossed the newly created border, creating an immediate problem: Pakistan depended heavily on waters whose headwaters largely lay in India.

Water therefore became more than a resource. It became an issue of national security, agriculture and economic survival.

Negotiations initially struggled to make progress. In 1952, World Bank President Eugene Black offered the Bank’s assistance, beginning a process that would last approximately nine years. The Bank’s role was unusual. Rather than acting simply as a mediator between two governments, it brought technical and financial expertise into the negotiations and helped the parties move away from an increasingly difficult debate over individual water uses.

The eventual solution was striking. The Treaty allocated the Eastern Rivers (Ravi, Beas and Sutlej) primarily to India, while the Western Rivers (Indus, Jhelum and Chenab) were allocated primarily to Pakistan, while still permitting certain uses by the other state. The settlement was accompanied by financing for major infrastructure intended to allow Pakistan to replace irrigation capacity affected by the division.

The Treaty was signed in Karachi on 19 September 1960 by Indian Prime Minister Jawaharlal Nehru and Pakistani President Ayub Khan, with the World Bank acting as a signatory.

A treaty designed to manage disagreement

One of the most interesting features of the IWT is that it was not designed on the assumption that India and Pakistan would suddenly become friends.

Instead, it created institutions and procedures for managing disagreement.

The Permanent Indus Commission provides a regular channel for communication between the two countries. Where disagreements cannot be resolved there, the Treaty establishes different mechanisms depending on the nature of the issue: certain “questions” can be dealt with through the Commission, “differences” can be referred to a Neutral Expert, and certain “disputes” can be submitted to a Court of Arbitration.

This is important from a negotiation perspective. Successful international agreements do not necessarily eliminate disagreement. Sometimes their greatest achievement is making disagreement manageable.

The IWT demonstrates the value of separating the political relationship between states from the technical administration of a shared resource.

From negotiation to arbitration

The current arbitration centres largely on Indian hydroelectric projects on the Western Rivers, particularly the Kishenganga and Ratle projects.

Pakistan initiated arbitral proceedings in 2016, while India requested the appointment of a Neutral Expert. The World Bank initially paused both processes in an attempt to give the parties an opportunity to reach an agreed solution. After those efforts failed, the processes resumed in 2022.

India has subsequently refused to participate in the Court of Arbitration proceedings and has challenged the Court’s competence.

Nevertheless, the Court has continued to consider the dispute. In 2023 it determined that it was properly constituted and competent to hear the case. In June 2025, it further determined that India’s announcement that the Treaty would be held “in abeyance” did not deprive the Court of jurisdiction.

The Court then issued an Award on the general interpretation of the Treaty in August 2025, followed by a further award concerning maximum pondage in May 2026.

The most significant development came on 31 August 2026. The Court ruled on the status of the Treaty following India’s decision to place it in abeyance and concluded that there was no legal basis for unilateral suspension or termination. It held that the Treaty remains in force and that India remains bound by its obligations. The Court also issued interim measures concerning construction at the Ratle hydroelectric plant.

India, however, has rejected the ruling and maintains that it does not recognise the Court’s authority.

Why does this matter for international arbitration?

The Indus Waters dispute raises a difficult question for the future of international arbitration:

What can arbitration achieve when one party refuses to recognise the tribunal?

On one level, the case demonstrates the strength of treaty-based dispute resolution. India and Pakistan agreed in 1960 to a framework containing arbitration mechanisms, and the Court has relied upon that framework despite the deterioration of their political relationship.

But it also exposes arbitration’s fundamental limitation: a legal ruling does not automatically produce political compliance.

The Court can determine what the Treaty requires. It cannot, by itself, repair the India–Pakistan relationship or guarantee that both states will accept the practical consequences of its decision.

This is where the history of the IWT becomes particularly relevant to negotiators. The Treaty succeeded not because it eliminated political disagreement, but because its original negotiators created mechanisms that could continue functioning despite disagreement.

The lesson for future treaty negotiations may therefore be less about designing the perfect substantive allocation of resources and more about designing resilient institutions: clear procedures, neutral experts, information-sharing obligations and credible dispute-resolution mechanisms.

What happens next?

The biggest question is now whether arbitration can preserve the legal framework of the Treaty while diplomacy attempts to preserve the political relationship between the parties.

The Indus Waters Treaty has survived wars, diplomatic crises and decades of hostility. Its current challenge is arguably different: the dispute is testing whether an international agreement can continue to function when one party disputes the legitimacy of the very mechanism intended to resolve the disagreement.

For international arbitration, that makes the IWT more than a dispute over hydroelectric design.

It is a test of whether law can continue to structure international relations when diplomacy breaks down — and whether arbitration can succeed without political cooperation.

For negotiators, perhaps the most enduring lesson is even simpler: the best international agreements are not those that assume conflict will disappear. They are those designed to survive it.

References & further reading:

World Bank — The Indus Waters Treaty 1960 and the Role of the World Bank
World Bank Fact Sheet

World Bank — The World Bank’s Role as Mediator in the 1950s
World Bank historical account of the negotiations

Permanent Court of Arbitration — Indus Waters Western Rivers Arbitration (Pakistan v India)
PCA case page and awards

PCA — Award on Issues of General Interpretation, August 2025
PCA press release

PCA — Award on the Status of the Treaty, 31 August 2026
PCA case materials

Reuters — India must uphold water-sharing treaty with Pakistan, international court says
Reuters report

When Environmental Regulation Meets Investment Arbitration: Kazakhstan’s $4.9 Billion Kashagan Dispute

Few disputes demonstrate the increasingly complicated relationship between environmental regulation and international investment arbitration better than Kazakhstan’s ongoing dispute with the consortium operating the giant Kashagan oil field.

At the centre of the dispute is an environmental fine worth approximately 2.3 trillion Kazakhstani tenge, around US$4.9 billion. Kazakhstan argues that the operator violated environmental rules concerning the storage of sulphur. The consortium rejects both the allegations and the fine, while international arbitration proceedings are now running alongside Kazakhstan’s domestic enforcement efforts.

The dispute raises a question that is likely to become increasingly important in investment arbitration:

How far can a State go in enforcing environmental regulation against a foreign investor before that regulation becomes an international investment dispute?

Kashagan: an oil field of enormous importance

Kashagan is one of the world’s largest oil discoveries of the past several decades. Located offshore in Kazakhstan’s section of the Caspian Sea, the field contains billions of barrels of recoverable reserves and began production in 2016.

The project is operated by North Caspian Operating Company (NCOC), a consortium involving major international energy companies including Shell, TotalEnergies, ExxonMobil and China’s CNPC, alongside Kazakhstan’s national oil company KazMunayGas and other partners.

Kashagan is therefore much more than another oil project. It is an important source of Kazakhstan’s energy revenue and an example of the country’s long-term reliance on foreign investment and international energy companies.

That makes the current dispute particularly sensitive.

How did the $4.9 billion fine arise?

The dispute concerns the storage of sulphur at facilities associated with the Kashagan project.

Following an environmental inspection, Kazakhstan’s authorities alleged that NCOC had exceeded permitted sulphur-storage limits. The authorities imposed a penalty of approximately 2.3 trillion tenge in 2023. NCOC and its contractors dispute the allegations and maintain that they had obtained the necessary permits and complied with the applicable requirements.

The dispute subsequently moved through Kazakhstan’s domestic courts.

In August 2025, an administrative court annulled the original penalty because of procedural problems. The court did not, however, determine that the underlying environmental allegations were unfounded. Kazakhstan subsequently corrected the procedural issues and reissued the fine. In April 2026, a Kazakh court upheld the reissued penalty, and by June the relevant domestic proceedings had reached the stage where Kazakhstan considered the fine enforceable.

The matter then moved into a much more complicated phase.

Now Enters International Arbitration

NCOC’s shareholders have challenged Kazakhstan’s actions through international arbitration.

The dispute involves both UNCITRAL arbitration proceedings and ICSID treaty arbitration, with the investors arguing that Kazakhstan’s conduct violates protections owed to them under the applicable investment framework. The precise legal claims remain subject to the arbitral proceedings.

The crucial issue in July 2026 was therefore not simply whether the environmental fine was valid under Kazakh domestic law.

It was whether Kazakhstan could enforce that fine while the international arbitration was ongoing.

On 16 July, NCOC announced that a UNCITRAL tribunal had issued a restraining order preventing Kazakhstan from taking measures to enforce the fine while the arbitration remained pending.

Kazakhstan took a different view.

Its Ministry of Justice argued that the domestic court judgment remained enforceable and that the interim measure issued in the arbitration did not automatically have legal force within Kazakhstan.

The disagreement illustrates one of the most difficult practical questions in international arbitration:

What happens when an arbitral tribunal and a State’s domestic legal system appear to be pulling in different directions?

Environmental protection versus investor protection

The Kashagan dispute is particularly interesting because neither side’s position is easily reduced to a simple narrative.

From Kazakhstan’s perspective, environmental regulation is an exercise of sovereign authority. States have legitimate interests in protecting their environment, enforcing environmental standards and ensuring that companies operating within their territory comply with domestic law.

From the investors’ perspective, however, foreign investment treaties exist precisely because investors require protection against certain forms of state conduct.

This creates a fundamental tension within modern investment arbitration.

If an environmental regulation is genuinely necessary and non-discriminatory, should an investor nevertheless be able to claim compensation?

Conversely, if a State uses environmental regulation selectively or disproportionately against foreign investors, should international law provide a remedy?

The Kashagan dispute sits directly within this debate.

So Is this “Resource Nationalism”?

The dispute has also attracted attention because of broader concerns about resource nationalism.

Kazakhstan has been involved in several major disputes with international oil companies. In January 2026, Kazakhstan won a separate arbitration concerning the Karachaganak field, in which it had sought approximately $4 billion. Critics have suggested that Kazakhstan is attempting to increase state control over its energy resources, although the government rejects the characterisation of its actions as resource nationalism.

That broader context matters.

International arbitration does not occur in a political vacuum. An arbitral tribunal may be considering a specific legal dispute, but investors, governments and future counterparties will inevitably consider the wider investment climate.

For Kazakhstan, the outcome could therefore affect not only the Kashagan consortium but perceptions of the country’s relationship with international energy investors.

Why this matters for the future of investment arbitration

The Kashagan dispute highlights several issues that are likely to become increasingly important.

1. Environmental regulation is becoming an arbitration issue

As governments introduce stricter environmental rules, foreign investors are increasingly likely to challenge measures that affect the profitability or operation of their investments.

This means investment tribunals may increasingly have to balance investor protection against a State’s regulatory autonomy.

Kashagan is therefore part of a much broader trend involving oil and gas regulation, climate policy, environmental protection and natural resources.

2. Interim measures can become crucial

The dispute also demonstrates why interim measures matter.

If a State can enforce a multi-billion-dollar penalty before an arbitral tribunal reaches a final decision, the practical consequences may be enormous.

Interim measures can therefore determine the commercial reality of a dispute long before a final award is issued.

3. Domestic courts and international tribunals can collide

Perhaps the most interesting procedural question is the relationship between domestic proceedings and international arbitration.

Kazakhstan’s domestic courts have upheld the environmental fine, while NCOC says the international tribunal has restricted enforcement.

This creates a difficult question for international arbitration:

How should an arbitral tribunal protect the effectiveness of its proceedings when the dispute is simultaneously being litigated inside the host State?

That question is unlikely to disappear.

What should we watch next?

The immediate focus will be on the international arbitral proceedings and whether the tribunal ultimately accepts the investors’ arguments.

There is also a broader question about Kazakhstan’s relationship with the international oil companies operating its largest fields.

The stakes are unusually high.

For Kazakhstan, the dispute concerns billions of dollars and the authority of the State to enforce its environmental laws.

For the investors, it concerns the security of one of the world’s largest energy investments and the extent to which international investment protections constrain state action.

And for international arbitration, Kashagan provides another example of an increasingly important reality:

environmental regulation, energy security and investment protection are becoming inseparable.

The traditional image of investment arbitration as a dispute over expropriation or contractual rights is becoming increasingly outdated. The next generation of disputes may instead ask whether a State’s response to climate change, environmental degradation or resource management has gone too far.

Kashagan is therefore not simply a dispute about a US$4.9 billion fine.

It is a preview of one of the central questions facing international investment arbitration:

How do we protect foreign investment while preserving a State’s right — and responsibility — to regulate in the public interest?

The answer may shape the future of energy investment arbitration far beyond Kazakhstan.

References & further reading

Reuters — “Kazakhstan, Kashagan operator spar over $4.88 billion environmental fine” (16 July 2026)
A useful overview of the environmental fine, the domestic proceedings and the competing positions of Kazakhstan and NCOC.
Reuters — Kashagan environmental fine dispute

Reuters — “Kazakhstan freezes assets of Kashagan operator over disputed $5 bln environmental fine” (24 July 2026)
Useful for the subsequent escalation after the July enforcement deadline.
Reuters — Kashagan asset freeze

Reuters — “Kazakhstan warns head of Kashagan operator it may prosecute over failure to pay fine” (21 July 2026)
Further detail on Kazakhstan’s enforcement position.
Reuters — Kazakhstan enforcement warning

Interfax Kazakhstan — UNCITRAL arbitration and the restraining order
NCOC’s account of the tribunal’s interim order concerning enforcement of the fine.
Interfax Kazakhstan — UNCITRAL restraining order

Times of Central Asia — “Kashagan Operator Faces July 20 Deadline to Pay $4.9 Billion Environmental Fine”
Background on the domestic proceedings and the history of the penalty.
Times of Central Asia — Kashagan background

International Consortium of Investigative Journalists — “Kazakhstan alleges Big Oil corruption tainted $10.7 billion in contracts” (14 August 2026)
Useful wider context on the separate confidential arbitration between Kazakhstan and NCOC.
ICIJ — Kazakhstan and Kashagan arbitration

When an MFN Clause Opens a New Door: A Case Analysis of The Swedish Supreme Court and Z.O. v Georgia

International investment arbitration often turns on a deceptively simple question: what exactly did a State consent to when it signed an investment treaty?

On 26 June 2026, the Swedish Supreme Court gave an important answer in Z.O. v Georgia (Case No. T 9380-24). The Court held that a so-called most-favoured-nation (MFN) clause could extend to dispute resolution and, in this case, allow an investor to access a different arbitral institution from the one specified in the underlying investment treaty.

The decision is significant because MFN clauses have traditionally been associated with substantive investment protections. Their use to alter the procedural route to arbitration has been much more controversial.

What is an MFN clause?

Most-favoured-nation treatment is a familiar concept in international investment law.

Put simply, a State promises investors from its treaty partner that they will not receive treatment less favourable than that given to investors from a third State.

Imagine State A has investment treaties with States B and C. If the treaty between A and B contains an MFN clause, an investor from B may argue that it should receive a more favourable protection that State A has granted to investors from C.

The difficult question is whether this principle can extend beyond substantive protections — such as fair and equitable treatment — to the mechanism through which an investor brings a claim against a State.

That is where Z.O. v Georgia becomes interesting.

The Dispute

The underlying dispute concerned an investor who sought to bring arbitration against Georgia under the 1995 UK–Georgia Bilateral Investment Treaty (BIT).

The treaty’s dispute-resolution provision directed disputes towards arbitration through ICSID, the International Centre for Settlement of Investment Disputes. The investor nevertheless commenced proceedings before the SCC Arbitration Institute in Stockholm.

But why?

The investor relied upon the MFN clause in the UK–Georgia BIT together with the dispute-resolution provision of another treaty, the Georgia–Belgium-Luxembourg Economic Union BIT, which offered investors access to SCC arbitration.

The argument was therefore essentially:

The UK–Georgia BIT gives me MFN treatment; another treaty gives investors a more favourable route to arbitration; therefore I should be able to use that route.

Georgia disagreed, arguing that it had not consented to SCC arbitration.

That goes to the heart of investment arbitration: State consent is the foundation of the tribunal’s jurisdiction.

What did the Swedish Supreme Court decide?

The Supreme Court sided with the investor on the jurisdictional question.

The Court emphasised that the starting point is the wording of the particular MFN clause and that the treaty must be interpreted according to the principles of the Vienna Convention on the Law of Treaties.

Importantly, the Court concluded that the relevant MFN clause covered dispute resolution, including the question of which arbitral institution could hear the dispute.

The Court also considered the dispute-resolution provision in the comparator treaty to be more favourable to investors. As a result, the MFN clause, combined with the comparator treaty’s provision, could establish jurisdiction for an SCC tribunal.

This does not, however, mean that every MFN clause automatically permits an investor to change the arbitral forum.

The judgment is heavily dependent on the specific wording of the treaty.

The Court stated that States are free to agree that an MFN clause covers dispute resolution. Where the clause expressly encompasses dispute resolution, and the relevant treaties contain investor-State dispute mechanisms, the principle of ejusdem generis, broadly, that a clause should not be extended beyond the category of matters to which it relates – will not necessarily prevent the MFN clause from applying to dispute settlement.

Why does the choice of arbitral institution matter?

At first glance, changing the arbitral institution might seem like a technical procedural issue.

It isn’t.

Different institutions have different rules, administrative structures, appointment procedures and approaches to the conduct of arbitration.

The choice between ICSID and SCC arbitration, for example, can have meaningful consequences for an investor and a State.

This is why the decision matters beyond the particular dispute. If an MFN clause can be used to access a more favourable dispute-resolution mechanism, then the drafting of an investment treaty’s MFN provision may have consequences far beyond the substantive protections it appears to establish.

It also raises an important question about treaty drafting:

Can States unintentionally give investors access to dispute-resolution mechanisms that they did not expressly negotiate into the original treaty?

The Swedish Supreme Court’s answer is, essentially, potentially yes if the treaty’s wording supports that interpretation.

The wider debate over MFN clauses

This issue is not new.

Investment tribunals have taken different approaches to the use of MFN clauses in relation to dispute settlement. The debate has historically centred on whether procedural provisions should be treated as part of the “treatment” protected by an MFN clause.

Some tribunals have permitted investors to use MFN clauses to access more favourable dispute-resolution provisions. Others have been reluctant to do so, particularly where doing so could undermine carefully negotiated jurisdictional requirements.

The Swedish judgment therefore enters an already divided area of international investment law rather than settling the debate for everyone.

Indeed, the Swedish Supreme Court itself stressed the importance of interpreting the particular treaty before it, rather than establishing a universal rule that MFN clauses always encompass dispute resolution.

What does this mean for the future of investment arbitration?

There are at least three things worth watching.

1. Treaty drafting will become even more important

States negotiating modern investment treaties will need to be increasingly precise about what their MFN clauses cover.

If a State does not want an MFN clause to modify its dispute-resolution arrangements, clear drafting may become particularly important.

Conversely, investors will continue to examine older treaties for broad MFN language that might provide access to more advantageous procedural mechanisms.

2. The decision adds another layer to the question of arbitral consent

International arbitration ultimately depends upon consent.

The interesting feature of Z.O. v Georgia is that consent to a particular forum can arise not only from the express dispute-resolution clause itself, but — depending on the treaty — through the interaction between an MFN clause and another treaty.

That makes treaty interpretation incredibly important at the jurisdictional stage.

3. MFN clauses remain a strategic tool

For investors, MFN provisions may provide another way of navigating restrictive or less favourable dispute-resolution clauses.

For States, they are a reminder that the consequences of treaty drafting can extend beyond what was immediately obvious when the treaty was negotiated.

The Bigger Picture

Perhaps the most interesting lesson from Z.O. v Georgia is that international arbitration is not simply about the arbitration proceedings themselves.

The real battle may begin much earlier in the wording of a treaty negotiated decades before a dispute ever arises.

An apparently broad MFN clause negotiated in the 1990s can, decades later, influence which arbitral institution hears a dispute.

That gives international investment arbitration an unusual temporal dimension: today’s dispute can be determined by yesterday’s diplomatic drafting.

For students and practitioners of international arbitration, Z.O. v Georgia is therefore worth watching closely. The decision does not establish that MFN clauses universally allow investors to switch arbitral forums. But it provides a clear reminder that where treaty language is broad enough, the MFN clause may become more than a protection against discriminatory treatment.

It can become a doorway to a different dispute-resolution mechanism.

And in investment arbitration, the question of where a dispute can be heard may be almost as important as what the dispute is about.

References & further reading:

Supreme Court of Sweden — “An arbitral tribunal has been deemed competent on the basis of a so-called MFN clause”
Official summary of the judgment, Case No. T 9380-24, 26 June 2026.
Supreme Court of Sweden — official case summary

Supreme Court of Sweden — Judgment, Case No. T 9380-24
The Court’s decision and reasoning concerning MFN clauses, treaty interpretation and arbitral jurisdiction.
Supreme Court of Sweden — Case T 9380-24

Kluwer Arbitration Blog — “Same, Same but Different? The Swedish Supreme Court Holds That MFN Clauses Can Import ISDS Provisions From Other Treaties”
Useful commentary on the judgment and its place within the broader MFN debate.
Kluwer Arbitration Blog analysis

LexisNexis — “Swedish Supreme Court — most-favoured-nation clauses can import dispute resolution clauses from other treaties”
Analysis of the judgment and its implications for investment treaty arbitration.

Arbitral Digest — Z.O. v Georgia, “The MFN Clause”
Case summary and background concerning the UK–Georgia and Georgia–Belgium-Luxembourg treaties.

The Arbitration Act 2025: What To Look Out For

The fundamentals haven’t changed – but the details now matter more than ever.

Still confused about the new Arbitration Act 2025? Don’t worry, we have you covered! In today’s segment of Negotiation News, we will break down the different features of the Act, why they matter, and how it will impact the broader arbitration landscape.

The year 2025 marked a pivotal moment for arbitration in England and Wales. With the long-awaited Arbitration Act 2025 coming into force on 1 August 2025, the UK signalled its intent to remain a leading global hub for dispute resolution. But while the reforms have been widely described as evolutionary rather than revolutionary, their practical implications are significant.

So, what should arbitration practitioners, in-house counsel, and commercial parties really be paying attention to?

Modernisation > Reinvention

The Arbitration Act 2025 builds on the foundation of the Arbitration Act 1996, refining rather than replacing it. The goal is clear: enhance efficiency, clarity, and fairness while preserving a framework that already works well.

This “light-touch” reform reflects a broader consensus—London didn’t need a complete overhaul, but it did need to keep pace with competing arbitration seats like Singapore and Hong Kong.

So what are the key reforms in this Act?

#1: Summary Dismissal Powers

What it is:

One of the most practical changes is the introduction of summary dismissal.

Tribunals can now dispose of claims or issues that have “no real prospect of success”, streamlining proceedings and reducing costs.

Why it matters:

This brings arbitration closer to court-style efficiency mechanisms and may deter weak or tactical claims early on.

#2: Governing Law of Arbitration Agreements

What it is:

The Act introduces a default rule:
If parties do not specify the governing law of the arbitration agreement, it will be the law of the seat.

Why it matters:

This resolves long-standing uncertainty and reduces satellite litigation over governing law—an issue that has historically caused delay and expense.

#3: Tightening Jurisdictional Challenges

What it is:

The revised framework for section 67 challenges (jurisdictional objections) aims to prevent parties from effectively re-running their case in court.

Courts are now less likely to rehear evidence already considered by tribunals or entertain entirely new arguments.

Why it matters:

This strengthens finality and reinforces arbitration as a genuinely alternative dispute mechanism—not just a prelude to litigation.

#4: Stronger Support for Emergency Arbitration

What is is?

The Act clarifies and enhances court powers in support of arbitration, particularly for emergency arbitrators.

Emergency arbitrators now have improved access to enforcement mechanisms, including the ability to issue binding orders.

Why it matters:

This is critical for time-sensitive disputes, where interim relief can determine commercial outcomes.

#5: Codifying Arbitrator Disclosure Duties

What it is:

A notable development is the statutory duty of disclosure.

Arbitrators must now disclose circumstances that could reasonably give rise to doubts about their impartiality—including matters they ought reasonably to be aware of.

Why it matters:

This codifies existing case law and may raise the bar for transparency, particularly in industries where repeat appointments are common.

#6: Enhanced Arbitrator Immunity

What it is:

The Act strengthens protections for arbitrators, particularly in relation to resignation and removal.

Why it matters:
This reduces the risk of personal liability and supports independent decision-making—an essential feature of a robust arbitration system.

Beyond the Act: The Broader 2025 Arbitration Landscape

While the Act dominated headlines, it was not the only development shaping arbitration.

1. Increased (but still limited) court intervention

Applications to challenge awards have increased significantly—but success rates remain very low.

Takeaway:
Challenges may be rising for tactical reasons, but arbitration awards remain difficult to overturn.

2. Sovereign immunity on the rise

States are increasingly relying on sovereign immunity to resist enforcement of arbitral awards.

Takeaway:
Enforcement risk is becoming a more prominent consideration in disputes involving state entities.

3. Emerging guidance on AI and funding

Institutions are responding to new realities with guidance on:

• Use of AI in arbitration
• Third-party funding and its impact on costs and disclosure

Takeaway:
Procedural complexity is increasing, and parties must navigate evolving ethical and practical considerations.

What To Look Out For This Year?

Looking ahead, several trends are likely to shape arbitration practice:

• Continued global legislative reform (e.g. in China, France, Germany)
• Greater use of AI and technology in proceedings
• Growth in disputes linked to geopolitics, trade, and climate pressures

Final Thoughts

The Arbitration Act 2025 may not be revolutionary—but it is strategically important.

By refining key aspects of arbitral procedure, reinforcing efficiency, and addressing modern challenges, the Act strengthens London’s position in an increasingly competitive global arbitration market.

Source:

https://www.legislation.gov.uk/ukpga/2025/4

https://www.nortonrosefulbright.com/en/knowledge/publications/57187fe1/international-arbitration-key-developments-in-2025-and-trends-for-2026