About Article

This article examines early antiterrorism negotiations within international organisations (IOs) and their outcomes. It assesses how international coop eration emerged in specialised, regional, and global IOs and provides a long- term overview from the 1960s until the late 1980s. Drawing on primary sources and scholarly literature, this article identifies the patterns, trends, and key characteristics of the successfully adopted measures. It demon strates that early multilateral antiterrorism efforts faced several obstacles (sovereignty, national interests, mistrust, and geopolitics), and, therefore, international negotiations fared better when following a piecemeal approach within specialised or regional organisations, where the focus could be on specific aspects of terrorism (e.g., hostage-takings). A key char acteristic of the successfully adopted antiterrorism instruments was the aut dedere aut iudicare principle, which allowed states to maintain perceptions of sovereignty by either extraditing or trying a suspect. The antiterrorism efforts examined here were mostly preventative in design and worked to discou rage future terrorists by ensuring that safe havens were closed and that perpetrators faced justice. The shift to suicide terrorism in the 1990s would instead require new international antiterrorism efforts to focus on pre- emptive strategies, depriving terrorists of the means to carry out attacks. The roots of these measures were laid in the 1980s