His 1984 book "Vengeance" was a bestseller, printed in 21 editions in 13 languages. It portrayed the events of the Israeli Operation Wrath of God, undertaken in retaliation for the murder of Israeli athletes by Palestinian terrorists at the 1972 Olympics in Munich. The book was later adapted twice as films: first, as a made-for-TV-film "Sword of Gideon" (1986). It was later developed as a feature film "Munich" (2005), directed by Steven Spielberg and with a screenplay written by Tony Kushner, an American playwright who won the Pulitzer Prize.