Antakya, Turkey (CNN) -- More than 20 Syrian rebel commanders, including members of Christian opposition groups, have signed off on what they called a historic agreement to unite in the fight against ISIS and President Bashar al-Assad's forces. The deal came out of a meeting...

"ISIS has been trained by Iran's Revolutionary Guard," claims late Syrian rebel leader. Just hours before an explosion wiped out the entire leadership of one of the most powerful rebel groups in Syria, the head of Ahrar Al-Sham Brigade spent four hours talking to Yvonne...

(Reuters) - The Lebanese army said one person was killed and two wounded during a search for suspected militants at refugee camps near the border with Syria , and security sources said the number detained in the past two weeks had reached about 450. The army has been stepping up...

(Reuters) - The United States and its Arab allies bombed Syria for the first time on Tuesday, killing scores of Islamic State fighters and members of a separate al Qaeda-linked group, opening a new front against militants by joining Syria's three-year-old civil war. In a...