The Fatimid conquest of Egypt (969) was a defining moment in Islamic history. It destroyed any semblance of central authority in the Muslim world, provoked the reaction of the Turks as defenders of orthodox (Sunni) Islam, impelled the Omayyads in Spain to declare their own Caliphate, launched the powerful Murabitun revolution in western Africa, denied the Muslims their last chance to conquer...

The Qur’an bestows upon humankind the keys to the heavens and the earth (“Do you not see that God has made subject to thee all that is between the heavens and the earth”, Qur’an, 31:20). In the golden age of their history, Muslims used these keys to unlock the secrets of nature and they created a civilization that was the marvel of the world. Then, they overreached...

For a brief moment, towards the end of the 12th century, the Muslim world was politically united under one caliph ruling from Baghdad. This political unity, rare in Islamic history, projected itself on the military plane. In West Asia, the Crusaders were ejected from Palestine, Lebanon and Syria. Salahuddin recaptured Jerusalem in 1187. Four years later, in 1191, Muhammed Ghori of Ghazna...