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".
Balkans
In the 1990s, the transition of the regions' ex-Soviet bloc countries towards democratic free-market societies went peacefully with the exception of Yugoslavia. Wars between the former Yugoslav republics broke out after Slovenia and Croatia held free elections and their people voted for independence on their respective countries' referenda. Serbia in turn declared the dissolution of the union as unconstitutional and the Yugoslavian army unsuccessfully tried to maintain status quo. Slovenia and Croatia declared independence on 25 June 1991, followed by the Ten-Day War in Slovenia. Till October 1991, the Army withdrew from Slovenia, and in Croatia, the Croatian War of Independence would continue until 1995. In the ensuing 10 years armed confrontation, gradually all the other Republics declared independence, with Bosnia being the most affected by the fighting. The long lasting wars resulted in a United Nations intervention and NATO ground and air forces took action against Serb forces in Bosnia and Herzegovina and Serbia.
From the dissolution of Yugoslavia six republics achieved international recognition as sovereign republics, but these are traditionally included in Balkans: Slovenia, Croatia, Bosnia and Herzegovina, Macedonia, Montenegro and Serbia. In 2008, while under UN administration, Kosovo declared independence (according to the official Serbian policy, Kosovo is still an internal autonomous region). In July 2010, the International Court of Justice, ruled that the declaration of independence was legal. Most UN member states recognise Kosovo. After the end of the wars a revolution broke in Serbia and Slobodan Milošević, the Serbian communist leader (elected president between 1989 and 2000), was overthrown and handed for trial to the International Criminal Tribunal for crimes against the International Humanitarian Law during the Yugoslav wars. Milošević died of a heart attack in 2006 before a verdict could have been released. Ιn 2001 an Albanian uprising in Macedonia forced the country to give local autonomy to the ethnic Albanians in the areas where they predominate.