If some terrorist pops a Nuke in the US.. just one; I'd bet that washington's 'short list' of 'terror supporting' nations will be vaporized almost immediately.
No joke. If we get nailed, we'll react overwhelmingly and with out even a little bit of compassion for 'innocents'. There will be no 'discussion', no consulting other powers. Just big bright flashes over Terhan, Damascus, Ridyah etc.
There will be no mercy.. just remorse.