The director of the CIA has said his spy agency will not engage in waterboarding or other so-called enhanced interrogation techniques - even if ordered to by a future president.
CIA chief John Brennan told NBC News that he will not agree to carry out such techniques because "this institution needs to endure".
US president Barack Obama banned waterboarding shortly after taking office in 2009.
Republican presidential candidates Donald Trump and Ted Cruz have suggested they would not continue Mr Obama's ban. Donald Trump has gone as far as to say that he would bring back waterboarding and "worse" tactics to get information.
The CIA used such interrogation techniques after the September 11 attacks. Mr Brennan told NBC News that he would not agree to CIA officers carrying out waterboarding again.