Operation to kill Osama was risky:
US Defence Secretary Leon Panetta today said the daring operation to kill Osama bin Laden at his Abbottabad safe house in Pakistan was very risky as the al-Qaeda chief's presence there was not 100 per cent confirmed.
President Obama announced late Sunday that Osama bin Laden, the leader of Al Qaeda responsible for the Sept. 11 attacks, was killed in a firefight during an operation he ordered Sunday inside Pakistan, ending a 10-year manhunt for the world's most wanted terrorist.