Effective Deterrent? Noah Adams talks with Paul R. Pillar, a CIA officer on the National Intelligence Council, and Ivan Eland, director of defense policy studies at the Cato Institute in Washington, about whether the prosecution of suspected terrorists serves as a deterrent against future terrorist actions. (5:30) Terrorism and U.S. Foreign Policy, by Paul Pillar is published by Brookings Institution Press, 2001. Ivan Eland's foreign policy briefing, Does U.S. Intervention Overseas Breed Terrorism? The Historical Record, can be found online at www.cato.org. (Foreign Policy Briefing #50, Dec. 17, 1998).