Well, there's putting the brakes on globalization, fewer foreign wars, lower government spending (and probably some progress on reducing the national debt, which has increased more in the last eight years more than all of the 232 years prior to that, combined), among other things.
It's the same sort of thing as a lot of left wing policitians favour. Incur a lot of debt, and then that's going to cause so much growth that you'll come out smelling of roses.
Relevant to whom? While international friendship is great, we don't have to bomb anyone to be happy ourselves. Arguably, less international aggression would make the world in general happier as well.
