In the 20th century, Russian was a mandatory language taught in the schools of the members of the old Warsaw Pact and in other countries that used to be satellites of the USSR.
According to the Eurobarometer 2005 survey, fluency in Russian remains fairly high (20–40%) in some countries, in particular those where the people speak a Slavic language and thereby have an edge in learning Russian (namely, Poland, Czech Republic, Slovakia, and Bulgaria).
Russian belongs to the family of Indo-European languages and is one of the four living members of the East Slavic languages (which in turn is part of the larger Balto-Slavic branch).
Written examples of Old East Slavonic are attested from the 10th century onward.
In some cases, both the East Slavic and the Church Slavonic forms are in use, with many different meanings.
Therefore, the Russian language is the 7th largest in the world by number of speakers, after English, Mandarin, Hindi, Urdu, Spanish and Arabic.Russian is one of the six official languages of the United Nations.Education in Russian is still a popular choice for both Russian as a second language (RSL) and native speakers in Russia as well as many of the former Soviet republics.) is an East Slavic language and an official language in Russia, Belarus, Kazakhstan, Kyrgyzstan and many minor or unrecognised territories throughout Eurasia (particularity in Eastern Europe, the Baltics, the Caucasus, and Central Asia).It is an unofficial but widely spoken language in Latvia, Moldova, Ukraine and to a lesser extent, the other post-Soviet states.descendant of the language used in Kievan Rus', a loose conglomerate of East Slavic tribes from the late 9th to the mid 13th centuries.