The fact, that the European NATO members are far more capable then that Russian led and ill equipped rabble, and therefore will never allow for Putin to attack an existing NATO member (and get away with it). And the Fact, that it is not solely up to Trump to decide about Article 5.
It seems very evident that Americans in general - totally underestimate the existing European NATO military capability. Furthermore to my understanding and belief, e.g. China would never support a Russian military aggression towards the EU. - which happens to be China's main trading partner since 2022, outside of Asia.
Just my 2 cents.