Secession will strengthen Nationalism in neighbouring states.  The upsurge in Nationalism would not be limited to just the two parts of Bosnia &amp; Herzegovina, given the ethnic kinship between the Croats and Serbs of Bosnia and those of Croatia and Serbia, but would also in all likelihood lead to renewed nationalism in Serbia, Croatia and other FYRs as happened during the earlier rise of the nationalists before and during the Yugoslav wars [1] . This would jeopardise the progress made within and between these states and damage international cooperation. It would also likely set back the drive towards increased integration, the close cross national feeling and shared culture termed ‘the Yugosphere’ and ultimately being joined together again within the EU.  [1] Pesic, Vesna, ‘Serbian Nationalism and the Origins of the Yugoslav Crisis’, Peaceworks No.8, April 1996, United States Institute of Peace,  .26