Paul Kerr, a nonproliferation expert for the Arms Control Association, says any international deal worked out with Iran should include a pledge by the United States not to seek regime change in Iran …

Colombian presidential candidate Antanas Mockus has generated surprising support for his campaign of transparency and change, but the winner will need to reassure voters that security improvements wi…

L. Paul Bremer, who headed the Coalition Provisional Authority in Iraq after Saddam’s ouster, says the killing of Abu Musab al-Zarqawi is a " very important moment" in the war on terrorism and the ef…

Governments’ refusals to entertain the possibility of dialogue with groups such as al-Qaeda and the self-proclaimed Islamic State causes needless deaths, says expert Jonathan Powell.

Christopher Sabatini, a Latin America expert, says the apparent resolution of the Honduran political crisis--triggered in part by concerns over Hugo Chavez’s influence--marks a triumph for Obama admi…