Below is case law mapped directly to each enforcement channel, showing how courts have treated non-assistance, facilitation, finance, exports, and ministerial duty. These authorities are routinely relied on in UK courts and international forums.
CASE LAW — BY ENFORCEMENT CHANNEL
- Ministerial duty / non-assistance / urgency
R (Campaign Against Arms Trade) v Secretary of State for International Trade
UK Supreme Court, 2019 Principle: Ministers must keep export decisions under continuous review and reassess when new evidence of IHL violations emerges. Key holding:
A rational decision requires proper consideration of whether there is a clear risk that exports might be used in serious violations of IHL. Relevance: Confirms ongoing duty; delay or partial measures are unlawful once risk is credible.
Bosnia and Herzegovina v Serbia and Montenegro
International Court of Justice, 2007 Principle: Duty to prevent genocide arises once a state is aware, or should be aware, of a serious risk. Key holding:
A State breaches its obligation if it manifestly fails to take all measures within its power to prevent the crime. Relevance: Establishes the “totality” standard — partial steps are insufficient.
- Exports, licensing, and enabling assistance
R v B (Arms Export Control)
UK Divisional Court, 2001 Principle: Export control law must be interpreted in line with the UK’s international obligations. Relevance: Supports using Article 32, catch-all, and OGEL withdrawal expansively where IHL risk exists.
Prosecutor v Tadić
ICTY Appeals Chamber, 1999 Principle: Aiding and abetting requires practical assistance that has a substantial effect on the commission of crimes. Key holding:
Assistance need not be indispensable; it is sufficient that it facilitates the crime. Relevance: Directly applicable to exports, technology, and logistics.
- Finance, assets, and economic facilitation
Prosecutor v FurundĹľija
ICTY Trial Chamber, 1998 Principle: Aiding and abetting includes financial or other support provided with knowledge of the crime. Key holding:
The actus reus consists of practical assistance, encouragement, or moral support which has a substantial effect. Relevance: Financial support squarely qualifies.
R v Jogee
UK Supreme Court, 2016 Principle: Liability attaches where a party intentionally assists or encourages criminal conduct, knowing the essential facts. Relevance: Applies to corporate and financial actors who continue support with awareness of risk.
United States v Krauch (IG Farben Case)
Nuremberg Military Tribunal, 1948 Principle: Industrialists and financiers can be criminally liable where their economic activities enable international crimes. Key holding:
Participation through economic support and production can constitute complicity. Relevance: Foundational authority on corporate/financial facilitation.
- Sanctions, asset freezes, and enforcement discretion
Youssef v Secretary of State for Foreign and Commonwealth Affairs
UK Supreme Court, 2016 Principle: Sanctions and asset freezes are preventive, not punitive, and can be imposed on a risk basis. Relevance: Supports early asset freezes to prevent facilitation, without waiting for convictions.
Bank Mellat v HM Treasury (No 2)
UK Supreme Court, 2013 Principle: Financial restrictions must be rational and proportionate, but courts accept preventive economic measures where national/international security is at stake. Relevance: Confirms Treasury’s authority to act decisively in the financial sphere.
- Criminal liability for facilitation (UK law)
R v Zafar
UK Court of Appeal, 2008 Principle: Knowledge of the essential circumstances is sufficient for assisting/encouraging liability. Relevance: Applies to banks, investors, insurers, and suppliers aware of the end-use risk.
R v Anwar
UK Court of Appeal, 2012 Principle: Assistance need not be close in time or space; remote facilitation still qualifies. Relevance: Directly rebuts arguments that finance or asset management is “too indirect”.
- Procurement and corporate exclusion
EnergySolutions EU Ltd v Nuclear Decommissioning Authority
UK Supreme Court, 2017 Principle: Public authorities must act consistently with public law duties and international obligations in procurement. Relevance: Supports exclusion or suspension of suppliers implicated in serious violations.
- Totality and cumulative impact
Al-Adsani v United Kingdom (dissent relied on in later cases)
ECtHR, 2001 Principle: Where violations are of the highest order, formal barriers cannot excuse inaction. Relevance: Supports cumulative-impact analysis and rejects procedural evasion.
SYNTHESIS (COURT-READY)
From these cases, courts consistently apply four rules:
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Knowledge of serious risk triggers duty (Bosnia v Serbia; CAAT).
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Assistance includes finance, assets, and economic activity (Tadić; Furundžija; IG Farben).
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Indirect or remote support still qualifies (Jogee; Anwar).
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States must take all measures within their power, in totality (Bosnia v Serbia).
One-sentence legal conclusion
Case law establishes that once serious international crimes are plausibly occurring, ministers must deploy all available export, financial, asset-freezing, supervisory, and criminal powers; partial or siloed action is legally insufficient.