US Attorney General Eric Holder has said that the raid on Osama Bin Laden's hideout, in which the al-Qaeda leader was killed, was "not an assassination".
Mr Holder told the BBC
the operation was a "kill or capture mission" and that Bin Laden's surrender would have been accepted if offered.
The protection of the Navy Seals who carried out the raid was "uppermost in our minds", he added.
Bin Laden was shot dead on 2 May in his compound in Abbottabad, Pakistan.
Mr Holder said the special forces had acted "in an appropriate way" in the absence of any clear indication Bin Laden had been going to surrender.
"If the possibility had existed, if there was the possibility of a feasible surrender, that would have occurred," he said.
"But their protection, that is the protection of the force that went into that compound, was I think uppermost in our minds."
The attorney general reiterated that the operation was legal, saying that international law allows the targeting of enemy commanders.
"The information we have... showed that [Bin Laden] was pushing al-Qaeda to engage in more plots in more areas of the world and on specific dates”
"I actually think that
the dotting of the i's and the crossing of the t's is what separates the United States, the United Kingdom, our allies, from those who we are fighting," he said.
BBC News - Bin Laden death 'not an assassination' - Eric Holder