The siege of Sarajevo was a prolonged military blockade of Sarajevo, the capital of the Republic of Bosnia and Herzegovina, during the ethnically charged Bosnian War. The city was initially besieged by the Yugoslav People's Army, before they were replaced by units of the Army of Republika Srpska. Lasting from 5 April 1992 to 29 February 1996, the siege was three times longer than the Battle of Stalingrad and more than a year longer than the siege of Leningrad, making it the longest siege of a capital city in the history of modern warfare.