Book excerpt: As a distinguished and admired American diplomat of the last half century, Burns has played a central role in the most consequential diplomatic episodes of his time: from the bloodless end of the Cold War and post-Cold War relations with Putin's Russia to the secret nuclear talks with Iran. Here he recounts some of the seminal moments of his career, drawing on newly declassified cables and memos to give readers a rare, inside look at American diplomacy in action, and of the people who worked with him. The result is an powerful reminder of the enduring importance of diplomacy. -- adapted from jacket