A suspected chlorine gas attack on an opposition-held neighborhood in the Syrian city of Aleppo caused dozens of cases of suffocation on Tuesday, rescue workers and a monitoring group said. The Syrian Civil Defence, a rescue workers' organization that operates in rebel-held areas, said...

An Iraqi Shi'ite militia said on Wednesday it had dispatched more than 1,000 fighters to the frontline in neighboring Syria, escalating foreign involvement in the battle for Aleppo, the biggest prize in five years of relentless civil war. New footage emerged of civilians choking in the...

 As U.S.-led coalition jets from a Turkish air base began to pound Islamic State targets in Syria in the summer of 2015, Ilhami Bali passed on what appeared to be an order from the militant group's leadership in Raqqa: unleash war on Turkey. Bali, identified by Turkish prosecutors as the...

Syria's opposition plans to unveil its plans for a political transition to help end the country's five-year war at a meeting of ministers in London next week, a delegate said. In emailed comments to Reuters, Hind Kabawat, a member of Syria's main opposition group, the High Negotiations...