The Syrian Democratic Forces (SDF), the local US partner force in northeast Syria, is facing intense pressure from ISIS, the Syrian Regime, and Turkey. The SDF's already-fraught relations with local Arab tribes have deteriorated significantly, especially in Deir ez-Zour Province. These issues came to a head in August when the assassination of several tribal sheikhs triggered a tribal backlash against the SDF. In this episode of Overwatch, Eva Kahan, John Dunford, and Jason Zhou discuss the escalating situation in Deir ez-Zour and what it means for US national security.