This fall marks the 30th anniversary of the fall of the Berlin Wall and the end of the Cold War. Exiting the Cold War, Entering a New World edited by Daniel S. Hamilton and Kristina Spohr explores how and why the dangerous yet seemingly durable world order forged during the Cold War collapsed in 1989, and how a new order was improvised out of its ruins. It is an unusual blend of memoirs by senior officials who were directly involved in the decisions of that time, and contributions by scholars who have been able to draw on newly declassified archival sources to revisit this challenging period.