In this scholarly work, the author presents a wealth of carefully documented, but little-known, information, both historical and current, about the multitudinous sufferings inflicted upon the Christian peoples (and Jews) who were conquered by Islamic invaders and subjected to the oppressions and humiliations of their consequent dhimmi status. Ye'or also shows that it was orthodox Islamic theological doctrine that provided the purpose for and the modus operandi employed both in these jihad wars and in the dhimmi-tude foisted upon the peoples conquered by them.
As bad as the orthodox Muslims appear in light of these horrendous facts, in some ways the Christians (supposed? Christians) appear even worse, because it was their division into mutually hostile ecclesiastical camps that so weakened them that it was relatively easy for the Muslims to conquer them, and to keep them in submission. It is horrifying to read what the Muslims have done and are still doing in their jihadic and dhimmitude operations, but it is disgusting (as well as horrifying in a deeper sense) to read about the acrimonious power struggles among these churches, which so egregiously violate the most elementary principles of the Biblical Faith. Muslims proved themselves to be true to a false faith, while the Christians proved themselves to be false to the true faith! (I am not referring to the recently converted Christians in Islamic lands such as Indonesia, Pakistan, and Sudan. These are very exemplary Christians.)
This book is must reading for anyone who wants to be knowledgeable about this subject, but I do not recommend it unless you are spiritually and mentally strong enough to endure reading of all the horrifying and disgusting events it presents.