The problem with sanctioning and tariffing everyone around you is that eventually, countries just ignore you all together and start trading with others.

We’re speed running the Confederacy here. The Confederacy thought that King Cotton would save the South. They thought that if the British were cut off from their cotton supply, eventually they would be forced to intervene on the side of the South. Instead, the British eventually just found alternative suppliers in Egypt and India. (They weren’t exactly angels here, this was still colonialism.)

Sanctions and tariffs can work if they are limited and targeted. Are there two or three countries that you truly feel are doing abominable things? Then cut them off from the trade system, and they will feel pressured to change their ways. If you embargo or tariff half the planet however, all those affected countries can still trade with each other. If you embargo or tariff too many countries, eventually you are embargoing yourself.