AFGHANISTAN, May 19 - ISIS is taking advantage of the seam between Syrian territory held by the regime and the Syrian Democratic Forces (SDF) to evade counterinsurgent pressure and rebuild its insurgency. ISIS will use the seam and lack of coordination between counterterrorism forces to set conditions that will enable a rapid resurgence after a US withdrawal. US and SDF raids are successfully targeting ISIS planners, but these high-value targets will evade effective counterterrorism pressure by exfiltrating to central Syria, where US and SDF forces decline to conduct raids targeting ISIS due to regime presence. These planners will use safe havens elsewhere in Syria to plan new attacks.