CIA Director John Brennan testifies on Capitol Hill in Washington, Thursday, June 16, 2016, before the Senate Intelligence Committee hearing on the Islamic State. Brennan said that the Islamic State remains "formidable" and "resilient," is training and attempting to deploy operatives for further attacks on the West and will rely more on guerrilla-style tactics to compensate for its territorial losses in the Middle East. (AP Photo/J. Scott Applewhite)
