So it is your contention that he should have elaborated. I don't see why there needs be any "translation." The logical implication behind the statement is that states which do not support us are theoretical enemies. His speech implied some kind of action he was going to take. Your translation is to simplistic and obvious, if thats all he was saying the retort is, "yeah, whats your point?"
When I watched that speech I was in a room with some fellow conservatives and some democrats. At that line, it wasn't the conservatives who where pounding their fists on the table it was the dems. One of them grabbed me and said, "thats what we need to hear," and then something about being Christian but still believing in revenge or words to that effect.
The point is we are now going to start taking action against our enemies. Don't be in the way.
It was that simple and it is that simple.
I can't help it if the people in the room with you were too sophisticated to understand it.
Shalom.