If they had asked him about Syria, he would likely have had an answer. I don't care if a candidate knows obscure foreign policy facts like this. That is why Presidents have people and advisers working for them. Do I need to know the name of the current leader of Venezuela to know there are a bunch of commies down there running the country into the ground?
IMO, this means more to the media than it does to the average voter. IMO, many of the media people making hay of it wouldn't have answered any better.
I find myself defending the guy and I have no plans to vote for him. However, I heard a radio commercial he did the other day. It was probably the best political ad I have heard in a long time.