I'll be getting this book...

The Crusades, Christianity, and Islam-- by Professor of History, Jonathan Riley-Smith-- as reviewed in First Things by Thomas Madden...

The review begins with the usual "understanding" of the Crusades-- by Moslems (particularly its more militant subsets) and even most Westerners.

Most people in the West do not believe that they have been prosecuting a continuous Crusade against Islam since the Middle Ages. But most do believe that the Crusades started the problems that plague and endanger us today. Westerners in general (and Catholics in particular) find the Crusades a deeply embarrassing episode in their history....

Madden shares his personal connection to relaying the relevant history, before his return to dove-tailing his review with the book:

On September 11, 2001, there were only a few professional historians of the Crusades in America. I was the one who was not retired. As a result, my phone began ringing and didn’t stop for years. In the hundreds of interviews I have given since that terrible day, the most common question has been, “How did the Crusades lead to the terrorist attacks against the West today?” I always answered: “They did not. The Crusades were a medieval phenomenon with no connection to modern Islamist terrorism.”

That answer has never gone over well. It seems counterintuitive. If the West sent Crusaders to attack Muslims throughout the Middle Ages, haven’t they a right to be upset? If the Crusades spawned anti-Western jihads, isn’t it reasonable to see them as the root cause of the current jihads? The answer is no, but to understand it requires more than the scant minutes journalists are usually willing to spare. It requires a grasp not only of the Crusades but of the ways those wars have been exploited and distorted for modern agendas.

That answer is now contained in a book, The Crusades, Christianity, and Islam, written by the most distinguished historian of the Crusades, the Cambridge University scholar Jonathan Riley-Smith. A transcription of the Bampton Lectures he delivered in October 2007 at Columbia University, it is a thin book, brimming with insights, approachable by anyone interested in the subject.

It is generally thought that Christians attacked Muslims without provocation to seize their lands and forcibly convert them. The Crusaders were Europe’s lacklands and ne’er-do-wells, who marched against the infidels out of blind zealotry and a desire for booty and land. As such, the Crusades betrayed Christianity itself. They transformed “turn the other cheek” into “kill them all; God will know his own.”

Every word of this is wrong. Historians of the Crusades have long known that it is wrong, but they find it extraordinarily difficult to be heard across a chasm of entrenched preconceptions....