The Kurds themselves stated that Iran forces were involved and were in possession of American supplied transport and weapons. The article also fails to mention that the Kurds have said that Turkey was also involved. Exactly the same is going to happen in Syria.  Russia,Turkey, Iran and the Syrian government will side against the Kurds and America will be in a mess of their own making.The Kurds in Raqqa have already put up pictures of Abdullah Öcalan who Turkey imprisons and has called together with his followers  terrorists and America has also classified Ocalan and his supporters as terrorists. So when the fighting starts as it surely will do they side with the Kurds and Ocalan supporter who they list as terrorists or Russia, the Syrian government, Iran and Turkey.