e Russians pulled out of Austria and Vienna was free of Soviet control.
The atmosphere of four-power Vienna is captured very well in the Graham Greene screenplay for the film The Third Man (1949), directed by Carol Reed. Later he adapted the screenplay as a novel and published it. Occupied Vienna is also colourfully depicted in the Philip Kerr novel, "A German Requiem." This title is misleading and reflects a common misunderstanding that the Viennese are "German" which to a Viennese is offensive. Whilst some authors will claim that the German language includes Vienna as within the "Deutcheraum" the Viennese themselves do not identify with Germany, or indeed with the rest of Austria in a defacto cultural, social or political sense.
Austrian State Treaty
The four-power control of Vienna lasted until the Austrian State Treaty was signed in 1955. That year, after years of reconstruction and restoration, the State Opera and the Burgtheater, both on the Ringstraße, reopened to the public. The State Treaty ensured that modern Austria would align with neither NATO nor the Soviet bloc, and is considered one of the reasons for Austria's late entry into the European Union.
In the 1970s, Austrian Chancellor Bruno Kreisky inaugurated the Vienna International Centre, a new area of the city created to host international institutions. Vienna has regained all of its former international stature by hosting international organizations, such as the United Nations (United Nations Industrial Development Organization, United Nations Office at Vienna and United Nations Office on Drugs and Crime), the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, the International Atomic Energy Agency, the Organization of Petroleum Exporting Countries, and the Organization for Security and Cooperation in Europe and the United European Gastroenterology Federation.
Historical population
Due to the industrialization and
