Building American hegemony is real. We organized the world under Bretton Woods in an carrot and stick formation over the Soviets. If you supported us generally against the Soviets, then we would protect trade routes and open our consumer base to you. That stance rebuilt the world, post WW2. However, we started to back away from globalization for various reasons. We allowed Russian incursions thinking that they would finally join the world in global trade using their oil and gas as their main trading component. In that space the US and western Europe provided the equipment and know how to them. However, Putin saw it as the west being weak and not willing to step up to them. He was wrong. There is historical reasons why they want to control Ukraine, mostly as a protective corridor from greater Europe and their need for its grain.
We now know they could never had won Ukraine in any meaningful way; just don't have the ability to control a country of that size. And we realized that we can use Ukraine as an effective way to finish the Russians for good. Demographically they are done, with fertility rates and demographic formations that make it impossible to recover (just not enough women in child bearing years). Militarily, they don't have the industrial base nor the knowhow to arm a modern military. Most of their equipment is 1-2 generations (tanks, airplanes, missiles, etc.) behind and they are already using weapons built/designed from the 1960s and 1970s. They have effectively neutered themselves.
Adding Finland and maybe Sweden to NATO is a big bonus. The real question is if the USA will continue to withdraw from globalization in favor of having a small regional based trading system which will actually make it stronger and no longer require it to maintain global trading routes with its Navy? Mexico, Canada, USA and a few South American countries like Columbia, Argentina, Chile (Lithium) and Bolivia (Lithium) would be all the USA would need going forward. Let the Europeans and the Asians protect their own trading routes and deal with the Middle East. Literally Russia and China are the only countries that we still are trying to contain and Israel and Taiwan are the only country we fully support, no questions asked that are outside of our region.