Marcus Klingberg, Polish-Israeli physician and biologist (b. 1918)
Avraham Marek Klingberg (7 October 1918 – 30 November 2015), known as Marcus A. Klingberg, was an Israeli scientist and the highest ranking Soviet spy ever caught in Israel. The case of Klingberg is regarded as one of the most destructive spy scandals in the history of the State of Israel.