The PKK engaged the Islamic State of Iraq and the Levant (ISIL) forces in Syria in mid-July 2014 as part of the Syrian Civil War. In August the PKK engaged IS in Northern Iraq and pressured the Government of Turkey to take a stand against IS. PKK forces helped tens of thousands of Yazidis escape an encircled Mount Sinjar. In September 2014, during the Siege of Kobanî, the PKK, receiving direct U.S. military support, engaged with Islamic State forces in Syria who were attacking Kurdish city Kobane, which resulted in conflicts with Turks on the border and an end to a cease-fire that had been in place over a year. The PKK said Turkey was supporting ISIS. The PKK participated in many offensives against ISIS in Iraq and Syria.