(Reuters) - Yemeni fighters loyal to the Saudi-backed President Abd-Rabbu Mansour Hadi clashed with Iranian-allied Houthi fighters on Sunday in Aden, the absent leader's last major foothold in the country. Hadi loyalists in the southern port city reported a gunbattle in the...

(Reuters) - Canada will expand its military mission against Islamic State by launching air strikes against the militants' safe havens in Syria as well as Iraq, Prime Minister Stephen Harper said on Tuesday. That will make Canada the second NATO member nation after the United...

(Reuters) - A U.S. drone strike killed at least nine Pakistani militants in Afghanistan 's Nangarhar province early Tuesday, intelligence officials said, part of an intensifying drone campaign against Pakistani militants in Afghanistan. Tuesday's drone strike was near the site...

 U.S.-led coalition jets struck Islamic State positions in northeast  Syria  for the second day in a row, in an area where the militants are battling Kurdish forces, a Kurdish official and a group monitoring the war said on Saturday. The Kurdish YPG militia, which has...