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".
Battle of the Miljevci Plateau
On 8 October, Croatia declared independence from Yugoslavia, and a month later the ZNG was renamed the Croatian Army ("Hrvatska vojska" – HV). Late 1991 saw the fiercest fighting of the war, as the 1991 Yugoslav campaign in Croatia culminated in the Siege of Dubrovnik, and the Battle of Vukovar. In November, Croatia, Serbia and the JNA agreed upon the Vance plan, contained in the Geneva Accord. The plan entailed a ceasefire, protection of civilians in specific areas designated as United Nations Protected Areas and UN peacekeepers in Croatia. The ceasefire came into effect on 3 January 1992. In December 1991, the European Community announced its decision to grant a diplomatic recognition to Croatia on 15 January 1992. SAO Krajina renamed itself the Republic of Serbian Krajina (RSK) on 19 December 1991.