Up until last week, the US had a presence in Syria, you do no think we knew where he was at all times? Our policy is not to kill heads of states, although we have that ability, he was allowed to walk and the Ayatollah should consider this and more. No one wants to kill Muslims, only those that murder. The US allows protests, and they get a little violent, but we do not send the military out, rounding up protestors and hang them. We fight at the poll both.