It is not as clear cut as you would make it out to be.
What the President said is that if you provide aid or safe harbor, you will be considered a hostile regime. "The threat of death via military tribunal" is the will of our people to see justice served as expressed by our elected Commander in Chief. If a nation chooses to harbor a suspected terrorist rather than see them face that justice, I presume that nation would be considered hostile. I hope so.
Now, what does one get for being a "hostile nation"? We don't know yet, do we? It might depend. What we can say is this: that old gasbag Helen Thomas doesn't need to know what we would do if we decided Spain was a hostile nation. She's an idiot. As the war progresses, we will find out more. I think it is wise that nations around the world are left to wonder what their fate may be. Let 'em think about it for a while.