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".
Croatia–Slovenia border disputes
The Arbitration Agreement between Croatia and Slovenia was signed in Stockholm on 4 November 2009, by both countries' prime ministers, Jadranka Kosor and Borut Pahor, and the EU President, Fredrik Reinfeldt.