Richard Holbrooke, who died in December 2010, was a pivotal player in U.S. diplomacy for more than forty years. Most recently special envoy for Iraq and Afghanistan under President Obama, Holbrooke also served as assistant secretary of state for both Asia and Europe, and as ambassador to both Germany and the United Nations. He had a key role in brokering a peace agreement among warring factions in Bosnia that led to the Dayton Peace Accords in 1995...