International terrorism threatens U.S. foreign and domestic security and compromis- es a broad range of U.S. foreign policy goals. This issue brief examines emerging interna- tional terrorist threats and the U.S. policy response. Available policy options range from diplomacy, international cooperation and constructive engagement to economic sanc- tions, covert action, physical security enhance- ment and military force. Throughout successive administrations, a key element of stated U.S. policy has remained: no concessions to terrorism. Periodic willingness by such groups as the PLO, and IRA to moderate behavior may warrant reassessment of this policy....