"Every public and undeclared enemy of...everyone else."

I think that goes a little too far. That would imply making common cause with public and undeclared enemies of, say, the present government in Iran, or Cuba. Including the most prominent among those, the US Government.

I know these "terrorists of the Islamic persuasion" have happily cooperated with the US government in the past, and vice versa, but I have a feeling that, at this point, it is unlikely that they will be holding hands and dancing together.