Federal agencies, shall jointly submit to the appropriate congressional committees a strategy to prevent the resurgence of Islamic State of Iraq and Syria (ISIS) in Iraq and Syria. (b) Elements of the strategy The strategy required under subsection (a) shall include the following elements: (1) A summary of the United States national security interests in Iraq and Syria and the impact a resurgence of ISIS would have on such interests. (2) A assessment of current training and support programs by Federal agency or department, specifically focused on countering ISIS and other terrorist organizations, including non-lethal assistance, training, and organizational capacity for the Syrian Democratic Forces, the Iraqi Security Forces, the Kurdish Peshmerga, and others to counter gains by ISIS and its affiliates. (3) A description of United States Government efforts to support, develop, and expand local governance structures in areas in Syria previously liberated from ISIS control. (4) An estimate of the number of current, active ISIS members in Iraq and Syria, including an assessment of those being held in detainee camps or prisons. (5) A comprehensive plan to address ISIS detainees currently being held in Syria and Iraq, including the following elements: (A) The designation of an existing official within the Department of State to serve as a senior-level coordinator to coordinate, in conjunction with the lead and other relevant agencies, all matters for the United States Government relating to the long-term disposition of ISIS foreign terrorist fighter detainees, including all matters in connection with— (i) repatriation, transfer, prosecution, and intelligence-gathering