Serbia revolted and gained nominal independence in 1815, but they were still vassals of the Ottoman Empire. Greece won their independence after a long war of independence from 1821 to 1829. The al-Saud family revolted in 1811 with the support of the Wahhabi sect. Then, Egypt under Muhammad Ali almost captured Constantinople, but the Russians repulsed them. The Egyptians settled with the Levant, and the Ottomans tried to retake it but were were soundly defeated. The Ottomans was dubbed the "sick man of Europe" because of the empire's incompetence in international affairs.