International criminal law (ICC, Rome Statute)
International criminal law for diplomatic exams: the Rome Statute, the ICC's core crimes, complementarity, jurisdiction, and the politics of enforcement.
From Nuremberg to The Hague
International criminal law fixes individual criminal responsibility for the gravest breaches of international law, displacing the older fiction that only states bear responsibility. Its modern foundation is the Charter of the International Military Tribunal at Nuremberg (1945), whose Article 6 first codified crimes against peace, war crimes and crimes against humanity, and whose judgment (1 October 1946) held that 'crimes against international law are committed by men, not by abstract entities.' The Tokyo Tribunal (IMTFE, 1946-48) applied the same logic in Asia.
The ad hoc tribunals revived the project after the Cold War: the ICTY (UN Security Council Resolution 827, 25 May 1993) for the former Yugoslavia and the ICTR (Resolution 955, 8 November 1994) for Rwanda. The ICTR's Akayesu judgment (2 September 1998) was the first conviction for genocide by an international court and recognised rape as an act of genocide. Tadic (ICTY, 1995 jurisdiction decision) extended individual responsibility to non-international armed conflicts.
The Rome Statute
The permanent International Criminal Court was created by the Rome Statute, adopted on 17 July 1998 and entered into force on 1 July 2002 after the 60th ratification. The Court sits at The Hague and, as of 2024, has 124 States Parties. Crucially, the United States (which 'unsigned' in 2002), China, India, Russia and Israel are not parties.
Article 5 lists four core crimes within the Court's jurisdiction: genocide (Article 6, tracking the 1948 Genocide Convention's definition), crimes against humanity (Article 7, widespread or systematic attack against any civilian population), war crimes (Article 8, grave breaches of the Geneva Conventions and other serious violations), and the crime of aggression (Article 8 bis, defined and activated only by the 2010 Kampala amendments, which entered into force for the crime of aggression on 17 July 2018).
Triggers and the Security Council
Under Article 13, the Court's jurisdiction can be triggered three ways: referral by a State Party, referral by the UN Security Council acting under Chapter VII, or proprio motu investigation by the Prosecutor (Article 15, subject to Pre-Trial Chamber authorisation). Security Council referrals reach even non-party states: Resolution 1593 (2005) referred Darfur (Sudan) and Resolution 1970 (2011) referred Libya. Article 16 lets the Council defer an investigation for 12 renewable months. This fusion of judicial independence and Council politics is the structural tension candidates must grasp.