Many of the traditional processes used to identify and prosecute terrorists operate at a pace too slow to keep up with terrorists’ ability to change and reorganize. Terrorists have adopted structurally independent modes of organization in diverse environments; counterterrorism policies must adopt methods to track terrorists within independent cells. More effort is needed in the area of border controls, such as shipping container security and identification of false documents. Terrorists now actively seek weapons of mass destruction; counterterrorism policies must safeguard nuclear materials. In short, counterterrorism policymakers must actively anticipate new threats.