Directly support as the commenter I was replying to was implying. Europe is not barely holding back Russia. Ukraine is. Article 5 would be invoked and the NATO

Directly support as the commenter I was replying to was implying. Europe is not barely holding back Russia. Ukraine is. Article 5 would be invoked and the NATO states would decide what support to send. Greece and Turkey fighting over some islands isn't the same as the strongest nation in the world annexing its neighbours. There would be broad public support in Europe to oppose the U.S. simply on principle, let alone the security concerns.