Robert Kostro: Why couldn’t Jan Karski stop the Holocaust?
In May 1943, a moving scene took place at the Polish embassy in Washington. A 29-year-old man, speaking English with a strong accent and recently arrived in the West from occupied Poland, was meeting with 61-year-old Felix Frankfurter, an American Jew and a US Supreme Court judge, in the company of Ambassador Jan Ciechanowski. The…