The US and Russia pretend not to understand the position of the YPG. The YPG is a pack of coyotes including thieves and usurpers, dishonest and perverted people, and assassins in the region. They are allegedly the only power fighting against the ISIS and al-Nusra whereas in fact, they are scared to death of the ISIS and Nusra. They have not clashed with the ISIS in an open field in any way; they always make progress depending on air support. - Harun Yahya