The counter argument to that justification of sanctions is that financial interdependence also discourages war. I mean, if North Korea gets nukes they can still shoot them and cause a lot of trouble, and we pretty much have no additional leverage aside from direct military intervention or taking the people one step further from poor -> dead.

With Russia sanctions are doing some damage right now, even if it hasn’t stopped the war. With North Korea we’ve blown our load and the main casualty is just a destitute population over there.