The U.S. needs a strategic policy in dealing with the complex situation in Syria. Defeating ISIS was the easy part; now, the difficult part begins.
The U.S. national security interest is clear. Long-term Iranian control in Syrian areas liberated from the regime and the Islamic State would cause further instability, fuel extremism and prolong the crisis.
Rival U.S. and Russian resolutions to extend the mandate of experts trying to determine who was responsible for chemical attacks in Syria were defeated at a heated Security Council meeting.
At least 53 people were killed in a ferocious attack on a market in north Syria on Monday that left rescuers and survivors digging late into the evening to search for residents still buried under the rubble.
The Islamic State group has been driven from more than 96 percent of the large parts of Iraq and Syria it once held, crushing its goal of establishing a "caliphate" that challenges existing borders.
A convoy of Islamic State militants and their relatives being evacuated from the border with Lebanon has crossed into an extremist stronghold in eastern Syria.
U.S.-backed forces in Syria announced a fresh offensive around the Islamic State's most important remaining stronghold: Eastern Syria.
Syria said Israeli airstrikes targeted a military position in the west of the country, killing two soldiers at a site where Syrian scientists are believed to have developed chemical weapons.
President Bashar Assad's forces reached besieged troops Tuesday at a garrison in Syria's eastern city of Deir el-Zour.