US has given money to Ukraine which is in Europe for many years, even before the current war, and has troops stationed in Poland and Germany and trains with a l

US has given money to Ukraine which is in Europe for many years, even before the current war, and has troops stationed in Poland and Germany and trains with a lot of European militaries (for example Finland even before it joined NATO). It is certainly possible that the US has given up on defending Europe just as anything is possible but I don't see any evidence for that. No NATO country has ever been attacked AFAIK so it doesn't seem reasonable to make such a certainly stated assertion about what would happen if that occurred, unless I am misunderstanding your point.