The crusades were among the longest and most bitter wars in human history and consisted of no less than seven major expeditions from Western Europe from the late 11th to the early 14th centuries for the purpose of wresting Jerusalem and the Holy Land from the control of the Muslims. In the end, it was the Muslims who won, and the Christians who suffered a major setback, and the Middle East remained firmly in Muslim hands. This was one of the worst clashes between different religions and civilizations and, for long, it was largely forgotten or brushed over. That is no longer the case, with...