Syrian rebel brigades oppose US - backed group that announced government in exile . In a speech Tuesday to the United Nations , President Barack Obama pledged $ 340 million in additional assistance to Syria , while reiterating his support for what he described as the country 's `` moderate opposition . '' Thirteen rebel groups call on members of the Syrian opposition to observe Sharia . Moderate opposition groups appear to have suffered a series of setbacks this year . Secular Syrian activists have been warning of the rise of Islamist groups .
Syrian rebel brigades oppose US - backed group that announced government in exile . Thirteen rebel groups call on members of the Syrian opposition to observe Sharia . Moderate opposition groups appear to have suffered a series of setbacks this year . Secular Syrian activists have been warning of the rise of Islamist groups .