In 1631 the spahis of Asia Minor rose in revolt, in protest against the deposition of the grand vizier Khosrev; their representatives crowded to Constantinople, stoned the new grand vizier, Hafiz, in the court of the palace, and pursued the sultan himself into the inner apartments, clamouring for seventeen heads of his advisers and favourites, on penalty of his own deposition.
He was Turkish delegate at the Paris conference of 1856; was charged with a mission to Syria in 1860; grand vizier in 1860 and 1861, and also minister of war.
This was the longest siege on record, having been protracted for more than twenty years; but in 1667 it was pressed with renewed vigour by the Turks under the grand vizier Ahmed Kuprili, and the city was at length compelled to surrender (September 1669).
In 1840 Crete was again taken from Mehemet Ali, and replaced under the dominion of the Turks, but fortunately Mustafa still retained his governorship until he left for Constantinople to become grand vizier in 1852.
The 'Ulema form a powerful corporation, whose head, the Sheik-ul-Islam, ranks as a state functionary almost co-equal with the grand vizier.