Cynthia Littleton Business Editor Nadav Palti is about to mark his 20th year as CEO of Dori Media, the prolific Israeli production and distribution firm headquartered in Tel Aviv. Earlier this month, Palti and Dori executives from Argentina, Mexico, Switzerland, Spain, Singapore and other locations were busy preparing to bring the company’s largest-ever slate of TV shows and movies to pitch to global buyers. Everything changed on Oct.