Trump supports Russia now. They are allies
If the rumours are true, he's had no option but to support Russia since the 80s.
Worst case, it'd be a little reminiscent of the very first Black Mirror episode: https://en.wikipedia.org/wiki/The_National_Anthem_(Black_Mir...
For someone who is (I would suggest) a malignant narcissist / borderline sociopath like Trump, "suffering personal shame for someone else's benefit" is not an option because it just wouldn't occur to them. Even if you sat down and patiently explained it, the concept just doesn't make sense to them, like, eg., the concept of a flat earth doesn't make sense to non-lunatics.