The Siege of Sarajevo was the longest siege of a capital city in the history of modern warfare. After being initially besieged by the forces of the Yugoslav People's Army, Sarajevo, the capital of Bosnia and Herzegovina, was besieged by the Army of Republika Srpska from 5 April 1992 to 29 February 1996 during the Bosnian War. The siege lasted three times longer than the Siege of Stalingrad and a year longer than the Siege of Leningrad. After Bosnia and Herzegovina had declared independence from Yugoslavia, the Bosnian Serbs—whose strategic goal was to create a new Bosnian Serb state of Republika Srpska that would include parts of Bosnian territory—encircled Sarajevo with a siege force of 13,000 stationed in the surrounding hills. From there they assaulted the city with weapons that included artillery, mortars, tanks, anti-aircraft guns, heavy machine-guns, multiple rocket launchers, rocket-launched aircraft bombs and sniper rifles. From 2 May 1992, the Serbs blockaded the city. The Bosnian government defence forces inside the besieged city, numbering some 70,000 troops, were poorly equipped and unable to break the siege. It is estimated that 9,502–14,011 people were killed during the siege, including 4,548–8,407 soldiers and 4,954–5,604 civilians. Bosnian Serb military casualties numbered 2,229 soldiers killed or missing. The 1991 census indicates that before the siege the city and its surrounding areas had a population of 525,980. There are estimates that prior to the siege the population in the city proper was 435,000. The current estimates of the number of persons living in Sarajevo range from between 300,000 to 380,000.