Stephen Wayne, a Georgetown University expert on the American presidency, has written 11 books, including “The Road to the White House.” He discussed with McClatchy-Tribune foreign-affairs columnist John C. Bersia the firing of Afghanistan war commander Gen. Stanley McChrystal because of statements critical of the Obama administration that he and others made in Rolling Stone [...]

Peter W. Galbraith, the author of The End of Iraq and Unintended Consequences: How War in Iraq Strengthened America’s Enemies, formerly served as a U.S. ambassador to Croatia. He discussed global challenges for the United States with foreign-affairs columnist John C. Bersia.