International law only ever existed for as long as the United States was willing to enforce it.

Trump has rightly made the decision that if every other major power (China, Russia, etc) is going to routinely violate the rules-based international order and deal in realpolitik while the West alone tries to follow the rules, then our enemies will be emboldened to keep fucking around in the confidence that they'll never have to find out. So now we're back to a might-makes-right world, and the liberal establishment is having a meltdown about it.

As much as I can't abide Matt Walsh, he isn't wrong here.