This book is the winner of the Pulitzer Prize for general non-fiction 2010. The first full account of how the Cold War arms race finally came to a close, this riveting narrative history sheds new light on the people who struggled to end this era of massive overkill, and examines the legacy of the nuclear, chemical, and biological weapons that remain a threat today. Drawing on memoirs, interviews in both Russia and the US, and classified documents from deep inside the Kremlin, David Hoffman examines the inner motives and secret decisions of each side and details the deadly stockpiles that remained unsecured as the Soviet Union collapsed. This is the fascinating story of how Reagan, Gorbachev, and a previously unheralded collection of scientists, soldiers, diplomats, and spies changed the course of history.