Who should be credited for taking down Bin Laden?

Okay boys and girls, it's like this. I regularly stomp around YouTube, looking at videos about the Osama Bin Laden story and trying to put the pieces of the puzzle together in my head about who should take credit for it...Obama or Bush? My money is on Bush because it was his administration's idea from the very beginning and his administration's cooperation with the boys in Langley to send assets into the middle east to find him..yet the liberals think it was Obama's strategy..how can this be? Did I miss something? Or is this the usual liberal double talk? Share your thoughts, please