The Burji or Circassian Mamluk (Arabic: المماليك الشركس‎) dynasty ruled Egypt from 1382 until 1517, during the Mamluk Sultanate. It proved especially turbulent, with short-lived sultans. Political power-plays often became important in designating a new sultan. During this time Mamluks fought Timur and conquered Cyprus. Constant bickering may have contributed to the ability of the Ottomans to challenge them. Their name means 'of the tower', referring to them ruling from the Citadel east of Cairo.