From Paris to San Bernardino, from Orlando to Manchester the Western world has been rocked by shocking mass murders done in the name of Islam since the attack on the World Trade Center and the Pentagon in 2001. This chronology of these and other key events, from 2002 to 2018, offers an opportunity to analyze the ongoing conflict between Islamism and the West.

Author Fr. James V. Schall, S.J., a renowned political philosopher, discusses the difficulty that Europeans and Americans have in recognizing that resurgent Islamic militancy is not just caused by "terrorists", as if terrorism were some kind of independent movement or mind-set. Violence has a source. No one undertakes it without a cause that is worth, in his mind, the risk of death.

Islam is unique in its description of the world within itself, which is to live peacefully by the law of Allah, and the world outside this sphere, which is at war with Islam. The main concern of the author is the abiding existence of Islam over time and its constancy in attempting to achieve the goal of worldwide submission to Allah as a political and cultural fact.