Turkey’s President Assails U.S.-Trained Kurdish Border Force

President Recep Tayyip Erdogan of Turkey criticized a proposed American-trained force that could put thousands of Kurdish militia on the Turkish border.

News Analysis: Officials Eye Euphrates River Valley as Last Stand for ISIS

Even with the Islamic State on the run, U.S. advisers grapple with political and military problems in wresting Iraqi and Syrian towns from extremists.