 As a senior Israeli intelligence officer had said, by providing the documents Marwan turned his country, Israel's main enemy, into an open book.The information that Marwan provided made its way to the desks of Israeli Prime Minister Golda Meir, Defense Minister Moshe Dayan, and Israeli Defense Force Chief of Staff Chaim Bar-Lev in raw form.It shaped Israel's strategic and tactical approach to Egypt and allowed the Israelis a direct look at Egypt's war calculus, including Sadat's minimal requirements for launching a war