Day 449
April 13, 2026
4 incidents
- International Crime (Rome Statute) Foreign Policy & War
U.S. Naval Blockade of Iranian Ports
After Islamabad peace talks collapsed on April 12, Trump declared a full naval blockade of all Iranian ports beginning April 13. Trump threatened ships approaching the blockade would be 'blown to hell' and 'eliminated.' A blockade is a belligerent act under the law of naval warfare; imposed in furtherance of an unlawful war, it is also a listed act of aggression (UNGA Res 3314, Art 3(c)). The US declared that humanitarian shipments of food and medical supplies would be permitted, subject to inspection.
- Critical Rights and Rule-of-Law Concern Foreign Policy & War
Over 100 international law experts publish warning
More than 100 international law experts sign a statement published by Just Security warning that U.S. strikes on Iran violate the UN Charter and may constitute war crimes.
From: Trump Issues Ultimatum: 'A Whole Civilization Will Die Tonight' Unless Iran Capitulates
- Critical Rights and Rule-of-Law Concern Foreign Policy & War
US naval blockade takes effect
The naval blockade begins at 10 AM ET. Trump threatens ships approaching the blockade will be 'blown to hell.' A 40-nation coalition led by the UK begins planning to reopen the strait. Iran warns 'no port in the Persian Gulf will be safe.'
From: Strait of Hormuz Crisis: Global Energy and Food Security Catastrophe
- International Crime (Rome Statute) Military Overreach
Naval blockade takes effect; war enters siege phase
The US naval blockade begins at 10 AM ET. Trump threatens to destroy approaching ships. The war escalates from airstrikes to siege warfare against Iran's 88 million civilians. A 40-nation coalition led by the UK begins planning to reopen the strait in opposition to the US blockade.
From: Iran War: Crime of Aggression — War Launched Without Congressional Authorization