About 956, Saljuk arrived from the steppes of Turkestan. At a time when the Abbasids were unable to displace the Ummayads in Spain, the Fatimids in Egypt; when the Buwayhids and Ghaznavids controlled from Persia east and south. Welcomed by the Abbasids as a deliverer from Buwayhid power. Laid the foundations of the eventual Turkification of Asia Minor; at their height, they controlled from Syria, through Iraq, to Transoxiana, from their capital, Isfahan. Showed little interest in the Crusades - it was the Ayyubids who reclaimed the Crusader Kingdoms. Finally fell in the face of the arrival of the Mongols.