(Reuters) - Supreme Leader Ayatollah Ali Khamenei said Iran would need to significantly increase its uranium enrichment capacity, highlighting a gap in positions between Tehran and world powers as they hold talks aimed at clinching a nuclear accord. Iran and six major powers...

(Reuters) - U.S. Attorney General Eric Holder urged countries in Europe and elsewhere on Tuesday to do more to keep their own citizens from traveling to Syria to fight, saying the world cannot allow Syria to become a training ground for violent extremists. In a speech in...

GENEVA — The Islamic State’s executions of 13 Sunni Muslim clerics last month in Mosul, Iraq’s second largest city, were a move by the radical Sunni movement to silence moderate voices among Iraq’s Sunnis, and they deserve greater...

The White House said on Monday the a video posted on the Internet over the weekend of Abu Bakr al-Baghdadi, the reclusive leader of the Islamic State of Iraq and Syria (ISIS) is still being reviewed by the intelligence and cannot yet determine its authenticity. “We have not,...