Melania Trump walked straight into the global crossfire by putting pen to paper in a letter to Vladimir Putin — and that’s made her prime roast material, according to Jack Schlossberg, who just posted a parody video mocking the First Lady.

JFK’s grandson doubled down on his recent taunting of Melania on “TMZ Live” Monday, insisting it’s not about hating her or Trump — he points out with a brutal war tearing through Europe, seeing Putin — who’s accused of horrific war crimes — get a hero’s welcome on U.S. soil was way over the line, and the apparently heartfelt letter Melania wrote ain’t moving the needle.

Catch our clip — Jack goes all in, saying yeah, Melania’s wish that kids don’t suffer is fine … but she, Trump, and the U.S. need to get serious. Enough with the pointless meetings and tacked-on letters — he wants real foreign policy, not half-baked gestures.