Montenegro, officially the Republic of Montenegro, is a country located in southeastern Europe. It has a coast on the Adriatic Sea to the south, and borders Croatia to the west, Bosnia and Herzegovina to the northwest, Serbia to the northeast and Albania to the southeast. Its capital is Podgorica.Independent from the late Middle Ages until 1918, the country was later a part o+f various incarnations of Yugoslavia and the state union of Serbia and Montenegro. Based on the results of a referendum held on May 21, 2006, Montenegro declared independence on June 3, 2006. On June 28, Montenegro became the 192nd member state of the United Nations.