Asked specifically about the simulated drowning technique known as waterboarding, Trump cited the extremist group's atrocities against Christians and others and said: "We have to fight fire with fire."

Donald Trump is asking for a review of America's methods for interrogating terror suspects and the possible reopening of CIA-run "black site" prisons,

A leading GOP voice on national security matters says he doesn't care what President-elect Donald Trump says, the U.S. will not reinstate waterboarding.