Montenegro (/ˌmɒntɪˈneɪɡroʊ, -ˈniːɡ-, -ˈnɛɡ-/ ( listen); Montenegrin: Црна Гора / Crna Gora [tsr̩̂ːnaː ɡɔ̌ra]) is a sovereign state in Southeastern Europe on the Adriatic Sea. It borders Bosnia and Herzegovina to the north; Serbia and the disputed territory of Kosovo[a] to the east; Albania to the south and Croatia to the west. Montenegro has an area of 13,812 square kilometres and a population of 620 thousand, most of whom are Orthodox Christians. Its capital Podgorica is one of the twenty-three municipalities in the country. Cetinje is designated as the Old Royal Capital.