Simple example: water. The USA has a shortage of fresh water and that’s why Trump is arguing the border between the USA and Canada is artificial and he wants to nullify old treaties in order to be able to grab the water from the Great Lakes unilaterally. The point is not about if other countries achieve autonomy, it’s about isolationism which requires autonomy to work and Trump wanting to make the USA isolated like in the good ol’ times when they could ignore the world.
Praise the chemtrails!