They have had evidence of his involvement inciting, funding and inspiring terrorism for years. There isn't one government who has denied Bin Laden as a terrorist and the need to bring him down by hook or by crook. Personally I'm glad the tax payers didn't have to fund some long drawn out trial and create a security nightmare which would bring only grief. As Tiassa pointed out he could have played any scenario he liked but he preferred to die as he lived. I have no problem with that.