There are roughly eight million Muslims in south-east Europe, among them Albanians, Bosniaks, Turks and Roma -- descendants of converts or settlers in the Ottoman period. This new history of the social, political and religious transformations that this population experienced in the nineteenth and twentieth centuries -- a period marked by the collapse of the Ottoman, Austro-Hungarian and Russian Empires and by the creation of the modern Balkan states -- will shed new light on the European Muslim experience. Southeast Europe's Muslims have experienced a slow and complex crystallisation of their respective national identities, which accelerated after 1945 as a result of the authoritarian modernisation of communist regimes and, in the late twentieth century, ended in nationalist mobilisations that precipitated the independence of Bosnia-Herzegovina and Kosovo during the break-up of Milosevic's Yugoslavia. At a religious level, these populations have re--mained connected to the