Sunni Islamist groups have overrun Syrian army outposts and villages in the Idlib province, closing on coastal strongholds of President Bashar al Assad's government, rebels and a monitor said on Saturday.
The head of al Qaeda's Syria wing Nusra Front said he saw no solution soon to a conflict with the rival Islamic State group in Syria that has killed hundreds of fighters, according to an interview with Al Jazeera aired on Wednesday.
The United States has accused the Syrian military of carrying out air strikes to help Islamic State fighters advance around the northern city of Aleppo, messages posted on the U.S. Embassy Syria official Twitter feed said.