There have been numerous attempts to engage the United Nations in a meaningful campaign against state-supported and other terrorist activities. But the inherently political nature of terrorism has made it exceedingly difficult to gain global consensus on who even qualifies as a terrorist, much less agreement on counterterrorism measures to pursue. The rise of al Qaeda, the events of 9/11, the Madrid train bombing, and the London mass transit bombings provided the international community and United Nations with new impetus to respond to terrorism. Although a series of international conventions...