The recent prisoner exchange between Russia and the U.S. — the biggest and most complex since the Cold War — was a diplomatic chess game that required patience and creativity. Mark Mazzetti, an investigative reporter for The New York Times, explains. An earlier version of a map used in this video referred incorrectly to the status of Crimea by including it as part of Russia. Russia seized the peninsula in 2014, and most countries do not recognize Crimea as Russian territory.
