Dangers are looming for Western civilizations due to the creeping invasion of Muslims, who are gradually diluting the West with their own beliefs as they end up taking over and dominating them. This danger is described very eloquently and frighteningly by French writer Michel Houellebecq in his best-selling novel Submission. This process also triggers a fundamental change in Western societies, so the old cultures of Europe, which are known, sought, and admired by outsiders, will practically disappear, replaced by an amalgam of ancient European tradition with a newly imposed Muslim faith, mores, and Sharia laws. Muslim tourists and immigrants to the West are gradually but firmly imposing their culture on a scared West, which has lost its will to fight and its capacity to defend itself because of political correctness and a reluctance to face the truth. This volume is the fourth in the Quartet on the Waning of Western Civilizations which also comprises: Retreating from the Mirage of Multi-Culturalism, Misnomers and Cultural Choices, and Suicidal Democracy published in 2018-19. (About the Author) Raphael Israeli has taught Islamic, Chinese, and Middle Eastern history at Hebrew University in Jerusalem. A graduate of Hebrew University in history and Arabic literature, he earned a Ph.D. in Chinese and Islamic history from the University of California, Berkeley. Now retired, he has been a Fellow of the Harry Truman Research Institute at Hebrew University and the Jerusalem Center since the 1970s, and is the author of over 50 research books, a dozen edited books, and 100 scholarly articles about Islam.