If they can find the carrier and get close enough to it to take a shot, AND if that country is willing to endure the never ending glow that would be the response..... you don't want to forget that there is no place on earth that the US can't rain massive precision guidance on - tomorrow, directly from the show me state.
they are not hard to find. But taking one out is only the option, if you have similar capabilities, i.e. we are in the old MAD territory. The russians may still have a MASD capability, and I suspect China will have it within a decade.

