I think I have it now.
If there was a conflict between the US government and the citizens, no country would come to the assistance of the citizens because the US military is so powerful they would obliterate those countries; however. the citizens could use the arms they had accumulated to defeat that same US military.
As proof of this line of reasoning the Revolutionary War is used. A war in which the citizens were armed, supplied, and assisted by France, Spain, and the Netherlands.
Now that's some sound logic.
If nothing else, you guys are good for a chuckle.