It’s not “always” bad. Some invasions are humanitarian, such as Vietnam invading Cambodia. Sure they could have let pol pot commit further genocide and let th

It’s not “always” bad. Some invasions are humanitarian, such as Vietnam invading Cambodia. Sure they could have let pol pot commit further genocide and let things take their natural course. The world is ruled by realpolitik. It’s not back and white. Sometimes you make alliances with the bad guys and that sometimes turns out okay and other times it’s the predictable disaster.