The opposition Syrian National Coalition on Wednesday denied a Russian charge that rebel fighters fired a projectile laden with the nerve agent sarin at a suburb of Aleppo in March, saying U.N. inspectors should be allowed to investigate the attack. Separately, Western diplomats said Russia...

 A month after the White House announced it was boosting aid to the Syrian opposition, rebel leaders say they have seen little or no evidence of U.S.-supplied arms entering the country and momentum on the ground is shifting toward the regime, analysts say.   It is...

Congressional committees are holding up a plan to send U.S. weapons to rebels fighting Syrian President Bashar al-Assad because of fears that such deliveries will not be decisive and the arms might end up in the hands of Islamist militants, five U.S. national security sources said....

  The United States faces "a 10-year issue" in Syria as it weighs how deeply it wants to get involved the country's civil war, the top U.S. military officer    warned in an interview that aired Sunday on CNN. Army Gen. Martin Dempsey told CNN's State of the Union that...