Funny, this is exactly the same sentiment that kept America out of Europe when Hitler was busy bombing Great Britain and steamrolling through 9 different other countries. If only there was a strong country to act as the world's policeman and a strong alliance of nations to prevent what eventually happened instead of each country having a every man for themselves attitude toward foreign policy. Oh wait, that's what we have now, and Russia is getting their asses kicked just from neighboring countries supplying arms to Ukraine, without any direct involvement. Can you not see that Putin is following the same Hilter playbook? How much do you want to bet that if Putin had succeeded in Ukraine he'd be on his way to Moldova and whomever else next and China would be gearing up to land on Taiwanese beaches right now. You don't have the level of influence the US has over the world when you "disengage" from it. What we do now will help keep the peace. I believe the plan now is to weaken Russia to the point of another sovient union like collapse.