Journalist, formerly i.a. with the Warsaw daily “Gazeta Wyborcza”, now with the internet weekly “Kultura liberalna”. Democratic opposition activist in the Seventies, and underground journalist (as Dawid Warszawski) in the Eighties. Co-founder i.a. of the underground Jewish Flying University, and of the Polish Jewish monthly Midrasz. Has taught i.a. at Hebrew University, UC Berkeley and Grinnell College. Author of a dozen books in Polish, English, Italian and Bosnian, i.a. on Poland’s round table negotiations of 1989, on the Yugoslav wars, on Israeli history, and commentaries on the Torah. Most recent publication: “Ostateczne rozwiązania” [Final solutions], Warsaw 2022, Agora, a book on comparative genocide.