[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/POLITICS/03/22/obama.60.minutes/art.obama.60minutes.jpg caption="In a '60 Minutes' interview, President Obama said, 'I fundamentally disagree with Dick Cheney'."]
(CNN) - President Obama said in an interview aired Sunday that the hardest decision he's made since taking office was to send more troops to Afghanistan.
Also in the interview on CBS' "60 Minutes," Obama defended his decision to shut down the U.S. prison at Guantanamo Bay, Cuba, and he countered criticism from former vice president Dick Cheney.
"I fundamentally disagree with Dick Cheney - not surprisingly," Obama said. "I think that Vice President Cheney has been at the head of a movement whose notion is somehow that we can't reconcile our core values, our Constitution, our belief that we don't torture, with our national security interests. I think he's drawing the wrong lesson from history."
Obama was responding to comments Cheney made to CNN's "State of the Union" on March 15, when he said the president is making the nation less safe by closing the Guantanamo prison and ending interrogation practices that Bush administration critics consider torture for terror suspects.