The five living presidents haven ' t always been as cordial as they were last week. Some historic zingers:
George H.W. Bush on Jimmy Carter, October 1980: "The American people will not abide a small, mean-minded, do-anything-to-win campaigner in the White House."
Barack Obama on Bill Clinton, January 2008: "We're going to have to … directly confront [him] when he's making statements that are not factually accurate."
George W. Bush on Barack Obama, January 2008: Comparing Obama's Iran diplomacy aims to Nazi appeasement, "We have heard this foolish delusion before."
Bill Clinton on George H.W. Bush, October 1992: After Bush called Clinton a "bozo," Clinton shot back, "Bozo makes people laugh; Bush makes people cry."
Jimmy Carter on George W. Bush, May 2007: "As far as the adverse impact on the nation around the world, this administration has been the worst in history."