Iran and Saudi Arabia were already in opposing camps regarding a solution to Syria's civil war. A UN envoy is trying to keep the process on track.
Iran is moving faster than expected, the US says, raising the possibility of sanctions relief in January. But hard-line rhetoric persists on both sides.
Russia’s intervention into Syria has been described as a “game changer.” The conflict has attracted a kaleidoscope of local, regional, and international players all vying to prevail. Here's a guide to who’s who.
Under Sheikh Nasrallah, Hezbollah rode to the defense of its ally Syria. But the Shiite group that was founded to confront Israel is paying a high price in lives and prestige.
Fighting between government forces and rebels has killed more than two dozen people in and near Damascus.
The Republican presidential candidate has attacked the White House's nuclear agreement with Iran. By painting a picture of an Israel on the brink of annihilation, he isn't winning new friends in Israel's government.