The diplomacy of socialist Yugoslavia paid a lot of attention to the international reputation of the country in the sphere of culture, and thus literature. At the same time, Yugoslav writers in the Writer's Union of Yugoslavia, faithfully supported Yugoslav foreign policy, both individually and institutionally. The most impressive example of collaboration between literature and diplomacy was awarding Ivo Andrić a Nobel Prize. The Writers' Union of Yugoslavia nominated the writer in 1958, and Yugoslav diplomacy lobbied in favor of Andrić for several years. The efforts were successfully crowned in 1961. In socialist Yugoslavia, the existence of a special Macedonian nation and its culture and language was insisted on, so in that sense, the greatest challenge was denying the Macedonian identity that came from Bulgaria. The Yugoslav Writers' Union, consistently pursuing state policy, suspended official co-operation with the Bulgarian Writers' Union in the second half of the 1960s due to Bulgaria's refusal to recognize the Macedonian language. Yugoslav writers also adapted to the state policy of non-alignment. They did not reach the level of cooperation with those countries that existed in the field of politics, economics or science, but they maintained ties with writers from those parts of the world in various ways. Among other things, the twentieth anniversary of the Belgrade Conference of the Non-Aligned Nations in October 1981 was a meeting of writers of non-aligned countries in Belgrade.