The main goal of the author in writing this critical book is to support peace in the world. This book covers some topical issues. One conclusion the author arrived at in this research is that extremism is a pan cultural phenomenon, not being endemic to a select group of nations or societies and none of the religions affirm or encourage violence and there is no link between religion and extremism. If there is no link between religion and extremism, the term "religious extremism" is just a mask created by extremists for giving the status of holiness to their own activities.