With over 500 entries arranged alphabetically, volume one covers biological and chemical weapons, while volume two focuses on nuclear weapons. Experts from eight countries cover issues related to these weapons, policies, strategies, technologies, delivery vehicles, arms control concepts, treaties, and key historical figures and locations. Entries are written to make difficult concepts easy to understand by cutting through military and scientific jargon. Students, lay readers, scientists, and government policy makers are provided with the broad range of information needed to place today's policy discussions in proper strategic or historical context.