On the basis of extensive scrutiny of primary sources from Nazi and Jihadist ideologues, Patterson argues that Jihadist anti-Semitism stems from Nazi ideology. Challenges the idea that Jihadist anti-Semitism has medieval roots, identifying its distinctively modern characteristics and tracing interconnections that link the Nazis to the Muslim Brotherhood to the PLO, Fatah, Hamas, Islamic Jihad, Hezbollah, Al-Qaeda, the Sudan, the Iranian Islamic Republic, and other groups with an anti-Semitic worldview.