Was the Killing of Bin Ladin a "war crime"? How about the time Hussein Obama authorized a drone strike on an American in a foreign country and hilled him, his son and a friend? A war crime?
No, no, and no.
"I will send for many fishermen, says the Lord, and they shall fish for them. (Remember Jesus, 'I will make you fishers of men.') After that I shall send for many hunters and they shall hunt them out from every mountain and hill and the crevices in the rocks. For my eyes are on all their ways ; they are not hidden from my sight, nor is their wrongdoing concealed from me."