Dick Cheney hadn't planned to speak, but others at the dinner in Manhattan noticed him growing a grimmer shade of grim. He was listening to Nicholas Burns, a former State Department official in Cheney's own Bush administration, wax eloquent about the virtue of diplomacy: how a new joint effort with France, Britain, Germany and even Russia and China could prevent Iran from gaining nuclear weapons and terrorizing the Persian Gulf region and the world. In other words, President Barack Obama's position. The host asked if the former vice president wished to respond. Yes indeedy, he did.