Arbitration Commission of the Peace Conference on Yugoslavia
On 20 November 1991 Lord Carrington asked: "Can the internal boundaries between Croatia and Serbia and between Bosnia and Herzegovina and Serbia be regarded as frontiers in terms of public international law?" Applying the principle of "uti possidetis juris", the commission concluded on 11 January 1992, "The boundaries between Croatia and Serbia, between Bosnia and Herzegovina and Serbia, and possibly other adjacent independent states may not be altered except by agreement freely arrived at... Except where otherwise agreed, the former boundaries become frontiers protected by international law".
History of Serbia
The Socialist Federal Republic of Yugoslavia broke up in 1991/1992 in a series of wars following the independence declarations of Slovenia and Croatia on 25 Jun 1991, and Bosnia and Herzegovina on 5 Mar 1992. Macedonia left the federation peacefully on 25 Sep 1991. The Yugoslav People's Army(JNA) tried and failed to prevent the secession of Slovenia in the Ten Day War 26 Jun – 6 Jul 1991 and completely withdrew by 26 Oct 1991. The JNA attempted and failed to prevent the secession of Croatia during the first phase of the Croatian War of Independence from 27 Jun 1991 until the truce of Jan 1992, but did successfully enable the Croatian Serb minority to establish the Republic of Serb Krajina which looked to Serbia for support. The biggest battle of this war was the Siege of Vukovar. Following the start of the Bosnian War on 1 April 1992 the JNA officially withdrew all its forces from Croatia and Bosnia in May 1992 and was formally dissolved on 20 May 1992 – its remnant forces being taken over by the new Federal Republic of Yugoslavia.