President Obama's inner circle had "voiced doubts" about the plan to raid Usama bin Laden's compound, the president said in an interview, stressing that the few who knew about the mission were not at all certain bin Laden lived there.

Discussing for the first time the many risks involved in the mission, Obama stressed that the operation was a gamble up until the very end.

"At the end of the day, this was still a 55/45 situation. I mean, we could not say definitively that bin Laden was there," the president told CBS' "60 Minutes"...