Belarusians are a major ethnic group in Russia. At the census of 2010, 521,443 Russian citizens indicated Belarusian ancestry. Major Belarusian groups live in the regions of Moscow, St. Petersburg, Kaliningrad, Karelia and Siberia. Most Belarusians in Russia are migrants from modern Belarus or their descendants, while a minor part of Belarusians in Russia are indigenous. Geography A minor part of Belarusians in Russia are original inhabitants of the Russian-Belarusian border regions. In ancient times the regions of Smolensk and Pskov were inhabited by the East Slavic tribe of Krivichi that later became major base of the Russian and Belarusian nations. The Russian town of Smolensk was several times conquered by Polatsk dukes and belonged to the Grand Duchy of Lithuania between 1408 and 1514. According to the census of the Russian Empire, some Belarusians lived in the territories of modern Smolensk Oblast, Bryansk Oblast. A small number of Belarusians used to live in the modern Kaluga Oblast, Pskov Oblast, Orel Oblast. The Korenization policies of the 1920s encouraged Belarusians of Russia to promote and develop Belarusian cultural life and education. A system of Belarusian schools was established in Western Russia. In the 1930s, the Korenization was reversed and its proponents were repressed. Moscow During the Polonization of the Grand Duchy in the 16th and 17th centuries, a large number of Orthodox Ruthenians, led by Princes Mstislavsky, Belsky and Galitzine, escaped the repressions to Moscow. In documents of that time they are also called Litvins or White Ruthenians. One of the compact settlements of Litvins in Moscow was the Meschanskaya Sloboda. Its inhabitants engaged in financial operations, trade, and medicine. Meschanskaya Sloboda had a degree of self-governance and a collegiate church. In the times of Imperial Russia and the USSR, Moscow as the scientific and economic centre of the country attracted many specialists from different parts of the empire including Belarus. So, the minister of foreign affairs of the USSR during the most tensed period of the Cold War was the Belarusian Andrei Gromyko. Today, Moscow also attracts huge numbers of specialists for constant and temporary work. Every year hundreds of students from Belarus join Moscow universities. St. Petersburg After the Partition of Poland, Belarusians started migrating to Russia including the imperial capital, St. Petersburg. Especially many peasants from northern and eastern regions of Belarus migrated to St. Petersburg. According to statistics, from 1869 to 1910 the number of Belarusians