Could another Cuban Missile Crisis happen? Listen in to a debate on that subject, as featured on the weekly CNN program "Postscript" -- which accompanies the COLD WAR series.

CNN World Affairs Correspondent Ralph Begleiter, Russian historian Vladislav Zubok and U.S. scholars Graham Allison and Mark Falcoff consider whether the United States could ever find itself vunerable to the threat of medium- or short-range nuclear missiles.

Zubok is one of the leading historians of the Soviet side of the Cold War and the author of "Inside the Kremlin's Cold War." He has studied extensively in Soviet and U.S. archives and has taught classes on the Cold War at Amherst College, Ohio University in Athens and Stamford University. In 1993, Zubok was employed by the Kennan Institute for Advanced Russian Studies in Washington, and since then has worked at the Norwegian Nobel Institute in Oslo and is now a fellow at the National Security Archive in Washington.

Allison is the Douglas Dillon Professor of Government at Harvard University and Director of the Belfer Center for Science and International Affairs at Harvard's John F. Kennedy School of Government. Until 1994, he served as assistant U.S. secretary of defense for policy and plans, coordinating Defense Department strategy and policy toward Russia, Ukraine and other former Soviet republics. Allison continues as a special adviser to the secretary of defense.

Falcoff is resident scholar at the American Enterprise Institute in Washington. He has taught at the universities of Illinois, Oregon and California (Los Angeles) and at the U.S. Foreign Service Institute, and served on the staff of the U.S. Senate Foreign Relations Committee. His books include "Small Countries, Large Issues;" "Modern Chile, 1970-1989: A Critical History;" "Panama's Canal: What Happens When the United States Gives a Small Country What It Wants;" and "A Culture of Its Own: Taking Latin America Seriously."