Let's see. Bin Laden was offered to surrender, but refused to do so. Likely he was trying to get a weapon in another room. The Navy SEALs assumed that anyone is armed and that applies to anyone wearing clothing, which Osama bin Laden was wearing at the time. So, it was justified for the SEALs to kill bin Laden. What if bin Laden had a bomb and blew himself up. He could of killed the SEALs. Also, bin Laden's death could be suicide by proxy, he had no plans on getting caught and rather die.