The Popes Against the Jews: The Vatican's Role in the Rise of Modern Anti-Semitism

The Pope and Mussolini: The Secret History of Pius XI and the Rise of Fascism in Europe

The Kidnapping of Edgardo Mortara

Hitler's Pope: The Secret History of Pius XII

Prisoner of the Vatican: The Popes, the Kings, and Garibaldi's Rebels in the Struggle to Rule Modern Italy

The Fall of the Ottomans: The Great War in the Middle East