No the question is 'what he fuck' was Osoma doing in a relatively populated part of Pakistan.

People were twittering about the explosions ffs... some element of the Pakistani government must have known he was there.

and to answer your somewhat redundant question... armed Americans were there because they found and wanted to kill the bastard responsible for 9/11.

Quite simple really. I doubt they were all that worried about asking for permission (assuming they didn't have it) offending the Pakistanis by killing OSAMA BIN FUCKING LADEN.

it was a small strike team in a couple of helicopters, they probably just flew over the border from afganistan... it's not like it was an entire battalion