, prince, diplomat – extraordinary envoy in Constantinople, member of the College of Foreign Affairs and vice-chancellor. Twice he was Minister of Internal Affairs. Since 1827 – Chairman of the State Council and the Committee of Ministers.
At the same time, in 1828, he headed a secret commission, which, during the departure of Emperor Nicholas I, to the Danube theater of military operations of the Russo-Turkish War of 1828-1829. within six months managed the internal affairs of the Russian Empire.