Right after Pearl Harbor, Washington expected the Japanese to invade the US. The Japanese were disuaded from doing so by some of their military leaders who were eductaed in the US. They said that invaders could expect an American with a gun behind every bush. A great deterent, wouldn't you say?
It is something that the officials in the State Department in Foggy Bottom shouls keep in mind as they seek to give the UN final say over OUR gun rights.