Kyrgyzstan ( ; Kyrgyzstan (); or Кыргызстан), officially the Kyrgyz Republic ( Kyrgyz Respublikasy; Kyrgyzskaya Respublika), formerly known as Kirghizia, is a country located in Central Asia. Landlocked and mountainous, Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the southwest and China to the east. Its capital and largest city is Bishkek. Kyrgyzstan’s history spans over 2,000 years, encompassing a variety of cultures and empires. Although geographically isolated by its highly mountainous terrain – which has helped preserve its ancient culture – Kyrgyzstan has historically been at the crossroads of several great civilizations, namely as part of the Silk Road and other commercial and cultural routes. Though long inhabited by a succession of independent tribes and clans, Kyrgyzstan has periodically come under foreign domination due to its strategic location, attaining sovereignty as a nation-state only after the breakup of the Soviet Union in 1991. Since independence, Kyrgyzstan has officially been a unitary parliamentary republic, although it continues to endure ethnic conflicts, revolts, economic troubles, transitional governments, and political party conflicts. Kyrgyzstan is a member of the Commonwealth of Independent States, the Eurasian Economic Union, the Collective Security Treaty Organization, the Shanghai Cooperation Organisation, the Organisation of Islamic Cooperation, the Turkic Council, the TÜRKSOY community and the United Nations. Ethnic Kyrgyz make up the majority of the country’s 5.7 million people, followed by significant minorities of Uzbeks and Russians. The official language, Kyrgyz, is closely related to the other Turkic languages, although Russian remains widely spoken, a legacy of a century-long policy of Russification. The majority of the population (64 percent) are nondenominational Muslims. In addition to its Turkic origins, Kyrgz culture bears elements of Persian, Mongolian, and Russian influence.