Trump calls for return to enhanced interrogation

Donald Trump is reviving his call for the US to engage in more extreme interrogation methods, saying the country has to be "pretty vicious" sometimes.

Trump was talking about the barbaric tactics used by Islamic State militants at a rally that drew thousands to an Albuquerque airport hangar. He scoffed at the fact that President Barack Obama has barred the use of waterboarding - a tactic Trump has long insisted works.

He says, "We have to be in some cases pretty vicious, to be honest with you."