Since we can't stop them from doing evil the only question is what degree of global power and influence they have in the coming years. Stopping all trade with them hurts them vastly more than it does us and ultimately handicaps their economy. The likely result is them dealing with a massive recession not nuclear war.
Are you American? Aren't you tired of playing hero? I'm tired of getting involved and then becoming a target of hate and demoralization.
I'm not talking about using trade as a lever to control them. I'm talking about giving up on pretending that doing business with them is going to change a totalitarian state into anything but a more economically successful totalitarian state.
America should be able to take its dollars elsewhere without engaging in armed conflict or "playing hero"