I’m not an American, I don’t like America, and I don’t think America could win a direct war against Russia. Which is why I never said anything to that effect. I said America could guarantee that Ukraine won its war against Russia, which is not a full Russian military commitment but which is fast becoming a total war for Ukraine. Russia most likely isn’t going to go into total war mode and mass mobilize the country for this war, a Ukrainian victory would merely involve a stalemate in which Russian forces felt like they couldn’t make significant advances anymore and which was too costly for Russia to maintain long term.
America has a lot of high end military equipment, it could arm and train Ukrainian forces sufficiently to achieve a stalemate if it was willing to absorb the massive cost. “Guarantee” is hyperbole, but it would definitely make Ukraine’s chances a lot better than the current 0%.
I could be wrong, and Russia could be willing to commit to national war mobilization in which case nothing can save Ukraine.