However, the rest of NATO has nothing to gain from throwing their whole military at the US in the Western Hemisphere. They certainly can’t win that conflict, so what would be the point? Just to kill hundreds of thousands of their troops?
They should know that the Americans aren’t going to kill the residents anyway, so it’s really just an idiotic dick-waving contest that Trump wants. The smart move would be to diplomatically retaliate and just screw with the US economically, to extract a concession from the next US President, who won’t have such obtuse ideas and will be eager to make the consequence of this self-inflicted jackassery (like no Americans allowed to visit the EU, EU regulators banning Google and Apple devices, etc) go away.