Finally, Europe's post-war history is a story shadowed by silences; by absence. The continent of Europe was once an intricate, interwoven tapestry of overlapping languages, religions, communities and nations. Many of its cities--particularly the smaller ones at the intersection of old and new imperial boundaries, such as Trieste, Sarajevo, Salonika, Cernovitz, Odessa or Vilna--were truly multicultural societies avant le mot, where Catholics, Orthodox, Muslims, Jews and others lived in familiar juxtaposition. We should not idealise this old Europe. What the Polish writer Tadeusz Borowski called 'the incredible, almost comical melting-pot of peoples and nationalities sizzling dangerously in the very heart of Europe' was periodically rent with riots, massacres and pogroms--but it was real, and it survived into living memory. Between 1914 and 1945, however, that Europe was smashed into the dust. The tidier Europe that emerged, blinking, into the second half of the twentieth century had fewer loose ends. Thanks to war, occupation, boundary adjustments, expulsions and genocide, almost everybody now lived in their own country, among their own people. For forty years after World War Two Europeans in both halves of Europe lived in hermetic national enclaves where surviving religious or ethnic minorities the Jews in France, for example--represented a tiny percentage of the population at large and were thoroughly integrated into its cultural and political mainstream. Only Yugoslavia and the Soviet Union--an empire, not a country and anyway only part-European, as already noted--stood aside from this new, serially homogenous Europe. But since the 1980s, and above all since the fall of the Soviet Union and the enlargement of the EU, Europe is facing a multicultural future. Between them refugees; guest-workers; the denizens of Europe's former colonies drawn back to the imperial metropole by the prospect of jobs and freedom; and the voluntary and involuntary migrants from failed or repressive states at Europe's expanded margins have turned London, Paris, Antwerp, Amsterdam, Berlin, Milan and a dozen other places into cosmopolitan world cities whether they like it or not.