Serbia (Србија / Srbija ), officially the Republic of Serbia (Република Србија / Republika Srbija ), is a country situated at the crossroads of Central and Southeast Europe in the southern Pannonian Plain and the central Balkans. The sovereign state borders Hungary to the north, Romania to the northeast, Bulgaria to the southeast, North Macedonia to the south, Croatia and Bosnia and Herzegovina to the west, and Montenegro to the southwest. The country claims a border with Albania through the disputed territory of Kosovo. Serbia's population is about seven million. Its capital, Belgrade, ranks among the oldest and largest citiеs in southeastern Europe.