The danger to Alexander Vindman comes not from the Republicans or Team Trump, but from disgruntled Deep Staters and anti-Trumpers who think he was not convincing enough to carry the argument either in the closed-room testimony, or in any public exposition of his claims.
‘Tis a shame, too, because he had such a solid future had he maintained his obscurity.
My suggestion is to send this disgrace to the uniform to Syria. Desk jockeys should experience battle before promotion. Or, maybe Iran.