In 2011, the Appeals Chamber of the UN Special Tribunal for Lebanon purported to identify a customary international crime of transnational terrorism and applied it in interpreting domestic terrorism offences under Lebanese law. This article argues that the Tribunal's decision was incorrect...

The surprising Decision by the Special Tribunal for Lebanon in 2011 that transnational terrorism in peacetime is a customary international law crime sparked controversy. Until then there was a widespread belief that there existed neither an agreed definition nor an international crime of...