Soviet Ballistic Missile Défense and NATO, by David S. Yost The Soviet potential for « breakout » or « creepout » from the cons-traints of the ABM Treaty has grown, owing to the expansion and upgrading of the Moscow System, the development of potentially BMD-capable surface-to-air missiles, the construction of new large phased-array radars, and investments in exotic advanced technologies. A large unilateral expansion of Soviet BMD capabilities could pose grave implications for the Atlantic Alliance in contingencies of crisis and war, and increase the possible vulnerability of the West to Soviet blackmail. Owing to the uncertain prospects of arms control solutions (especially in light of apparent Soviet violations of the ABM Treaty and the S...