Former President Donald Trump’s son-in-law Jared Kushner has inked a controversial new real estate deal in Serbia that requires his company to erect a Russian propaganda monument that excuses a brutal ethnic cleansing — and hits NATO for “aggression.” According to journalist Michael Isikoff’s “SpyTalk,” the fine print of Kushner’s new $500 million deal with the Serbian government to build luxury real estate in Belgrade “includes a commitment that seems destined to stir up even more international controversy: a pledge by Kushner’s firm, Affinity Partners, to construct a ‘memorial dedicated to a…