Hungary, after the 1956 revolution, played a special part in the dispute that broke out between the Soviet Union and Yugoslavia and continued with varying intensity for several years. This eventful story was an important part of the process that decided the fate of the East-Central European region. The immediate cause of political contention between Belgrade and Moscow was their differences over the Hungarian question, especially the fate of Imre Nagy, who had been prime minister during the revolution. The intrinsic conflicts lay deeper, however. Although the Nagy affair remained an important factor in the disagreements throughout – from his kidnapping to the ‘war of the protest notes’ that followed his execution – it acted mainly as a catalyst. The Nagy affair was an insurmountable problem for all the players concerned. It provided ample fuel for the debates, and each side found that it could be used to put pressure on the other. Due to the system of relations between the three communist countries, the Hungarian side played the least active part. János Kádár, having come to power through the crushing of the uprising of October 1956, was left in no doubt that Hungary had to follow faithfully the Kremlin's foreign-policy line and accommodate itself to Soviet regional policy requirements. Nonetheless, the story remains interesting from Hungary's point of view as well, because it reveals more than the constraints on a small, exposed country. It also shows how Kádár, as he zigzagged between the conflicting demands of Tito and Khrushchev, trying to keep on good terms with both, was gathering experience that would be useful in his later foreign policy.