Muslim sects regarded as heretical, such as the Druze, Ismailis, Alevis, and Alawites, ranked below Jews and Christians. Druze have been persecuted by Ottomans, and Ottomans have often relied on Ibn Taymiyya religious ruling to justify their persecution of Druze. In 1514, Sultan Selim I ordered the massacre of 40,000 Anatolian Alevis ("Qizilbash"), whom he considered a fifth column for the rival Safavid empire. Selim was also responsible for an unprecedented and rapid expansion of the Ottoman Empire into the Middle East, especially through his conquest of the entire Mamluk Sultanate of Egypt. With these conquests, Selim further solidified the Ottoman claim for being an Islamic caliphate, although Ottoman sultans had been claiming the title of caliph since the 14th century starting with Murad I (reigned 1362 to 1389). The caliphate would remain held by Ottoman sultans for the rest of the office's duration, which ended with its abolition on 3 March 1924 by the Grand National Assembly of Turkey and the exile of the last caliph, Abdülmecid II, to France.