Right - but American sanctions have a big effect. What happens when that power goes away? Who is going to sanction Russia?

You can complain about well America is sanctioning countries I disagree with, but it also affects countries you would agree with. When we don't have sanctions power perhaps military force gets used more.

Regardless of what happens both the EU and America are still within each other's spheres. That's not going to change anytime soon. We've gone through much worse.