(Reuters) - After allowing the United States to use its air space to bomb Islamic State fighters for six months, the Syrian army appears to have imposed a "red line" by shooting down a U.S. drone over territory of critical importance to Damascus. The U.S. military has said it...

(Reuters) - The United States lost contact with an unarmed Predator drone over Syria on Tuesday, U.S. officials said, stopping short of confirming the plane was taken down by Syrian air defenses, as reported by Syrian state media. "At this time, we have no information to...

(Reuters) - The United Nations is concerned by the presence of Islamic State in Afghanistan but says the militant group's power to unite insurgents is more significant than its capabilities in the war-torn country, a top U.N. official said on Monday. U.N. envoy Nicholas Haysom...

U.S. Secretary of State John Kerry said the United States would have to negotiate with  Syria n President Bashar al-Assad for a political transition in Syria and was exploring ways with other countries to pressure him into agreeing to talks. But State Department...