The Syrian Democratic Forces (SDF) are a coalition of combined Kurdish People's Defense Units YPG / Women's Defense Units YPJ, Syrian Arab Coalition - involving over 20 Arab military forces - and the Syriac Military Council (MFS) united to coordinate efforts against terrorism in northern Syria since October 31, 2015. In their first cooperation the SDF managed to successfully liberate over 1000 square kilometers from ISIS terrorists in south of Hasakah, including the extent around Khatuniyah Lake, the town of Hawl, pressuring ISIS supply routes from Iraq into Syria.