This guide covers political risk expert evidence across all major dispute forums. Examples involving UK law, UK investor-state arbitration, or London-seated proceedings reflect current developments in a leading arbitration centre, not an exclusive scope. The same principles apply to ICSID claims in Africa, sanctions arbitrations seated in Paris or Singapore, and political risk insurance disputes under policies governed by English or New York law.
What Is Political Risk in a Legal Context?
Political risk is the risk that government actions, political instability, or geopolitical events will affect the value or performance of investments or commercial arrangements. In legal proceedings, political risk expert witnesses explain the political context of events that are central to the dispute: why a government revoked a mining licence, how sanctions affected contractual performance, or whether civil unrest constituted a covered political violence peril under an insurance policy.
Political risk is distinct from commercial risk. A decline in commodity prices or a counterparty's insolvency is commercial risk. Government expropriation, arbitrary regulatory change, sanctions prohibiting performance, or politically motivated violence is political risk. The boundary between the two is frequently contested and requires expert analysis.
Three Legal Contexts Where Political Risk Expert Evidence Is Needed
| Context | Forum | Expert Role | Primary Issues |
|---|---|---|---|
| Investment treaty arbitration | ICSID, LCIA, ICC, UNCITRAL | Explain political context of host state conduct | Expropriation, FET, political violence |
| Political risk insurance | LCIA, ICC, Commercial Court | Establish whether insured political risk event occurred | Coverage trigger, cause of loss |
| Sanctions arbitration | LCIA, ICC, Commercial Court | Analyse sanctions regime and impact on contract | Force majeure, frustration, enforcement |
Types of Political Risk
The principal types of political risk requiring expert evidence include expropriation and nationalisation (direct and indirect), fair and equitable treatment breach, sanctions and regulatory risk, political violence and instability, currency inconvertibility and transfer restrictions, and resource nationalism. Each has dedicated expert analysis requirements and distinct legal frameworks depending on whether the dispute is treaty, insurance, or commercial.
The Sanctions Landscape 2025-2026
Sanctions are no longer the backdrop to international arbitration; they are the main event. They now shape how parties bring claims, perform contracts, and enforce awards. Nearly 25% of ICC cases in Q1 2024 involved sanctions, and the trend is expected to continue through 2026.
Russia-Ukraine sanctions, Iran re-sanctions in 2025, and the interaction between UK OFSI, US OFAC, and EU sanctions with blocking regulations create unprecedented complexity. Parties dispute force majeure, frustration, impossibility, and the lawfulness of performance under overlapping and sometimes conflicting regulatory obligations.
UK Investor-State Arbitration: A New Frontier
The UK government is currently respondent to two active investor-state arbitrations: Woodhouse/West Cumbria Mining and Mr Mikhail Fridman's claim. These represent a new frontier for the UK government with its network of over 80 bilateral investment treaties.
The National Security and Investment Act 2021 allows the UK government to review and block foreign investments affecting national security, creating a potential basis for treaty claims. Expert evidence on UK regulatory and policy decisions is essential in these proceedings.
Energy Charter Treaty Sunset Provision
The UK completed its withdrawal from the Energy Charter Treaty in 2025. The sunset provision protects existing investments by qualifying foreign investors until April 2045. ECT expert evidence remains relevant for UK energy investments and UK investors abroad for decades, particularly as energy transition policies generate regulatory disputes.
Resource Nationalism: The 2025-2026 Surge
Resource nationalism has intensified globally. Mining licence revocations in West Africa (Guinea, Mali, Burkina Faso), Latin America energy nationalism, and Central Asia infrastructure disputes are generating ICSID claims and commercial arbitrations. Political risk experts analyse whether state measures constitute legitimate policy or treaty breach.
CPR Part 35 and IBA Rules in Political Risk Cases
Political risk expert witnesses in UK Commercial Court and TCC proceedings must comply with CPR Part 35. The expert's duty is to the court. Reports must be independent, state all material instructions, and identify the facts and assumptions underlying the opinion.
In international arbitration, IBA Rules on Evidence Article 5 (party experts) and Article 6 (tribunal-appointed experts) govern engagement. Political risk experts should be instructed early, provided with comprehensive documentation, and coordinated with legal and quantum experts to ensure consistent case theory across all expert evidence.