A U.S.-backed Syrian-Kurdish militia, a number of Arab rebel groups and an Assyrian Christian group in Syria have formed a coalition to build a democratic representation for a number of moderate parties within Syria, according to a statement seen by Reuters on Monday. The new alliance, which is calling itself the Democratic Forces of Syria, includes the Kurdish People's Protection Units (YPG) that beat back the Islamic State (ISIS) with the support of U.S. airstrikes in the Syrian-Kurdish border town of Kobani earlier this year. The YPG continues to battle the radical Islamist group in areas of northeastern Syria and...