Alexei Mikhailovich (, ; – ), also known as Alexis, was Tsar of all Russia from 1645 until his death in 1676. He was the second Russian tsar from the House of Romanov.

While finding success in foreign affairs, his reign saw several wars with Iran, Poland (from whom left-bank Ukraine and Smolensk were annexed) and Sweden, as well as internal instabilities such as the Salt Riot in Moscow and the Cossack revolt of Stenka Razin in southern Russia. At the time of his death, Russia spanned almost .

Early life and reign

Alexis was born on , At the age of sixteen, he acceded to the throne after his father's death on 12 July 1645. In August, the Tsar's mother died, and following a pilgrimage to Sergiyev Posad he was crowned on 28 September in the Dormition Cathedral. He was committed to the care of his tutor Boris Morozov, a shrewd boyar open to Western ideas.

Morozov pursued a peaceful foreign policy, securing a truce with the Polish–Lithuanian Commonwealth and carefully avoiding complications with the Ottoman Empire. His domestic policy aimed at limiting the privileges of foreign traders and abolishing useless and expensive court offices. On 17 January 1648, Morozov procured the marriage of the tsar with Maria Miloslavskaya, himself marrying her sister Anna ten days later; These regiments formed the backbone of the new army of Tsar Alexis. To fulfill the reform goals, a large number of European military specialists were hired for service. This became possible because of the end of the Thirty Years' War, which created a colossal surplus of military professionals in Europe.

Rebellions

thumb|Portrait by a Polish painter, 1657

Throughout his reign, Alexis faced rebellions across Russia. After resolving the 1648 Salt Riot Alexis faced rebellions in 1650 in the cities of Pskov and Great Novgorod. Alexis put down the Novgorod rebellion quickly, but was unable to subdue Pskov, and was forced to promise the city amnesty in return for surrender. The Metropolitan Nikon distinguished himself at Great Novgorod and in 1651 became the Tsar's chief minister.

By the 1660s, Alexis's wars with Poland and Sweden had put an increasing strain on the Russian economy and public finances. In response, Alexis's government had begun minting large numbers of copper coins in 1654 to increase government revenue but this led to a devaluation of the ruble and a severe financial crisis. As a result, angry Moscow residents revolted in the 1662 Copper Riot, which was put down violently.

Schism with the Old Believers

In 1653, Patriarch Nikon established a series of reforms that aimed to bring the practices of the Russian Orthodox Church into line with its Greek counterpart. Most notably, the church began to mandate the use of three fingers instead of two in making the sign of the cross. This resulted in significant dissent among the church community. Nevertheless, Alexis continued to support Nikon until 1658, when Nikon abandoned his post due to a personal insult, leaving the seat of the patriarch vacant.

In 1666, the tsar convened the Great Moscow Synod, which was attended by Patriarch Macarius III Ibn al-Za'im and Patriarch Paisius of Alexandria, in order to address the problems caused by Nikon. The synod agreed to formally depose Nikon, and also decided to excommunicate all who opposed the reforms of the church; those opponents broke away from the official Russian Orthodox Church to form the Old Believers movement.

Several old believers fled to the monastery of Solovki which had revolted in the Solovetsky Monastery uprising. The monastery would be besieged for seven years until 22 January 1676 which was a few days before Alexis's death on 8 February 1676.

Assessment

thumb|Alexis praying before the relics of [[Philip II, Metropolitan of Moscow|Phillip II in the presence of Patriarch Nikon, painting by Alexander Litovchenko, 1886]]

According to the Encyclopædia Britannica Eleventh Edition: