Russian is the official language of Russia, although it shares the official status at regional level with other languages in the numerous ethnic autonomies within Russia, such as Chuvashia, Bashkortostan, Tatarstan, and Yakutia. It is also a co-official language of Belarus, Kazakhstan, Kyrgyzstan, and a co-official language of the unrecognized country of Transnistria and partially recognized countries of South Ossetia and Abkhazia. In Ukraine the Russian language lacks the status of a state language, but still enjoys an extensive protection as a regional and minority language with some official functions. The Constitution of Ukraine guarantees "free development, use and protection" of the Russian language. 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. Russian is still seen as an important language for children to learn in most of the former Soviet republics.