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".
1991 Croatian independence referendum
Croatia held an independence referendum on 19 May 1991, following the Croatian parliamentary elections of 1990 and the rise of ethnic tensions that led to the breakup of Yugoslavia. With 83 percent turnout, voters approved the referendum, with 93 percent in favor of independence. Subsequently, Croatia declared independence and the dissolution of its association with Yugoslavia on 25 June 1991, but it introduced a three-month moratorium on the decision when urged to do so by the European Community and the Conference on Security and Cooperation in Europe through the Brioni Agreement. The war in Croatia escalated during the moratorium, and on 8 October 1991, the Croatian Parliament severed all remaining ties with Yugoslavia. In 1992, the countries of the European Economic Community granted Croatia diplomatic recognition and Croatia was admitted to the United Nations.