Only by taking both external and internal factors into consideration it is possible to find some explanation for the massive violence that appeared with the disintegration of Yugoslavia. The more mixed, assimilated and indistinguishable the populations to be "separated" were, the more systematic, continuous and cynical the use of coercion had to be. The latter explains why the highest levels of "inter-ethnic" violence took place in Bosnia. Occident reacted according to the hypothesis of similarity/difference: when the first bombs fell on Slovenian land, the indifferent world leaders and the unaware-of-the-facts public opinion cast their eyes far from the tragedy, or arms crossed acted as witnesses of subsequent events. When the ethnic cleansing started in Croatia, some countries, above all Germany, began with delay to exert pressure on Belgrade in order to stop the march towards chaos. Dayton agreements, which followed the first "demonstrative" air attacks against restricted Serbian objectives, were only attained given the hard pressure from USA and despite the permanent opposition of UK and France. Finally, when the first images of refugees with scarves coming from Kosovo beat the mass media, a new humanitarian commotion was added to the eight years of suffering. If Yugoslavia had given so many rights to its republics and provinces, why did the federation get into disintegration? Were its peoples not satisfied with the rights they had obtained or had been assigned?