Peter I (Russian: Пётр I Алексеевич, romanized: Pyotr I Alekseyevich, IPA: [ˈpʲɵtr ɐlʲɪkˈsʲejɪvʲɪtɕ]; 9 June [O.S. 30 May] 1672– 8 February [O.S. 28 January] 1725), better known as Peter the Great, was the Tsar of all Russia from 1682 and the first Emperor of Russia from 1721 until his death in 1725. He reigned jointly with his half-brother Ivan V until 1696. Peter, as an autocrat, organized a well ordered police state.
Much of Peter's reign was consumed by lengthy wars against the Ottoman and Swedish empires. His Azov campaigns were followed by the foundation of the Russian Navy; after his victory in the Great Northern War, Russia annexed a significant portion of the eastern Baltic coastline and was officially renamed from a tsardom to an empire. Peter led a cultural revolution that replaced some of the traditionalist and medieval social and political systems with ones that were modern, scientific, Westernized, and based on the radical Enlightenment.