It's not so much "pro US" as "pro geopolitical stability". When nations just start annexing each other willy-nilly it becomes vastly more difficult to have stable world trade. The point is to demonstrate to anyone else with similar ideas (China) that they risk becoming an economic pariah on the world stage.

Currently India is undermining that object lesson and, instead, demonstrating that there will always be some nation willing to trade with the aggressor regardless of how heinous their crimes.