What does that have to do with Russia invading Ukraine?
LOL, I bet you felt differently about invading Afghanistan in October, 2001.
I bet you had no problem about US vs Iraq in January 1991.
It's like one of those board games. You only have so many pieces you can have and play. Do you want armies to squander one the Eurasian land mass where you are a logistics "disadvantage" [it's a bloody effin nightmare] or do you want maritime forces, ships, submarines, aircraft and intermediate range missiles to protect and keep open you sea lines of communications, which is easy for a maritime power like the US. Also you get to trade with your allies and reinforce your alliances and keep your own borders secure because the Atlantic and Pacific are your borders. See how easy it is if you open your eyes and look.
IIt's not a choice between isolationism or globalism. It's really between being a maritime power or a land power on the other side of a hell that you can't get to.