why would he do anything? Can't Japan do something?
True Japan can fight and protect herself. But last time Trump tough talk threatened Kim Jung On with massive armada on the way and nuclear strikes. Then lots of your friends celebrated how tough is Trump. A week later Kim tested more missiles and threatened to annihilate SK.
So what happened to those threats? Not a damn thing NOTHING.
That is one good example how he demonstrated his weakness and dumbness to the whole world.
Now your president is so quiet and finally learn to just STFU. Those tough talk doesn't mean a diddly squat.