A divided Islamic world offered feeble resistance to the Crusaders who consolidated their hold on the eastern Mediterranean and imposed their fiefdoms on the region. The Seljuks, preoccupied with defending their eastern flank against the Afghan Ghaznavids, had thinned out their western defenses. The pagan Turkish tribes across the Amu Darya on the northeastern frontiers were a constant menace....

Three men of giant stature dominated Islamic history in the 10th century. These were Abdur Rahman III of Spain, Muiz of Egypt and Mahmud of Ghazna. The first two determined the flow of historical events in the Mediterranean region, whereas Mahmud of Ghazna had a decisive impact on Central Asia and the Indo-Pakistan subcontinent. Abdur Rahman III was the ablest and most accomplished of the...