Josef Korbel (1909-1977), a Czechoslovak lawyer and diplomat, became publicly known both due to his historical and political works and as the father of the US Secretary of Foreign Affairs Madeleine Albright; the presented contribution introduces Korbel as a Czechoslovak ambassador in Yugoslavia, where he worked in 1945-1948. Yugoslavia was one of the traditional partners of Czechoslovakia and was to play an important role in the 'Neo-Slavonic Concept' by Edvard Benes. However, the state of Yugoslavia, restored after the Second World War, entrenched itself as a real communist dictatorship led by Josip Broz Tito; its policy in Central and South-eastern Europe soon rather complicated the position of Czechoslovakia. Korbel, who became familiar with the Yugoslav environment in the 1930s (he was a Press Executive at the Czechoslovak Embassy in Belgrade at that time), witnessed how the new regime strengthened its power; the initial most visible manifestations of this trend were elections (the only candidate was the National Front) and the subsequent deposing of the dynasty of Karadjordjevićs and the declaring of a federative people's republic. As a result of the initiative of Josip Broz Tito, the restored Yugoslavia became a formal ally of Czechoslovakia in May 1946; however, its aims differed a lot from the concept of foreign policy of the democratic government in Prague.