Given the disappointing history of arms control negotiations and agreements, disconcerting trends in the balance of power, and emerging technologies that challenge conventional assumptions about deterrence, new ways to promote security through negotiations must be identified and utilized if arms control is ever to play an integral role in enhancing deterrence and reducing instabilities. Confidence-building measures (CBMs) may offer one way out of the contemporary arms control morass. Instead of focusing on limiting the number and types of weaponry, CBMs are designed to control how, when,...