We cannot afford to ignore the resurgence of ISIS. Over the past 18 months, Syria's new regime has released more than 2,100 battle-hardened ISIS terrorists and this is on-top of ISKP growing three-fold in Afghanistan under Taliban protections. These are experienced terrorists with combat training, operational knowledge, and established networks who can play a significant role in rebuilding ISIS's capabilities across the region. The ISIS attack on Saint George's Greek Orthodox Church in Jordan on October 23 should be a wake-up call. Gunmen opened fire on Christians gathered for a funeral, killing nine people and wounding approximately 40 others. This is another reminder that religious communities and civilian gatherings remain active targets. The territorial defeat of ISIS never meant the terrorist organization was eliminated. Its ideology, leadership networks, facilitators, and experienced fighters did not simply disappear. ISIS does not need to control territory to remain a significant terrorist threat. We cannot continue ignoring the warning signs and then act surprised when the organization demonstrates its ability to carry out attacks.