When someone has truly disproportionate power, like the Organians from Star Trek, then they can make war obsolete. As it stands, thinking that Americans are mighty enough to prevent war (particularly when we're much better at starting them) is hubris of the highest order. We can prevent one kind of war, but this might invite another kind. I'm glad I don't have to make those kinds of decisions. I'm not even sure of the right decision here, but what I do know is that it isn't some kind of no-brainer, duh, we obviously should have started pointing our conventional missiles at Russian troops. Because we never had to put actual units in Ukraine, if we just declared that we were going to defend them unequivocally and fighters were fueled up and flying combat air patrols over key Ukrainian cities. What we don't know is where that ultimately leads in clandestine, cyber, and other theatres of warfare and conflict.