At the time of creation of Yugoslavia during the Paris Peace Conference following the conclusion of World War I, the Entente Powers signed the Treaty of Trianon with Hungary after the breakup of Austria-Hungary.

[7] Between 31 October and 1 November, just three days before Soviet intervention, leading Yugoslav newspaper Borba stopped supporting Nagy government due to its "right-wing elements".

[7] The Soviet Union launched a massive military invasion of Hungary on 4 November, forcibly deposing Nagy, who fled to the Embassy of Yugoslavia in Budapest where he was granted asylum.

Nagy was lured out of the Embassy (after the building itself was targeted by Soviet tanks in which cultural attaché Milenko Milovanov was killed[7]) under false promises on 22 November, but was arrested and deported to Romania.

Novi Sad based journal Új Symposion, newspaper Magyar Szó and other media and institutions provided platform for authors to express diverse ideas and opinions.

“Quadrangolare”, the regional cooperation of Austria, Italy, Yugoslavia and Hungary was launched in 1988 as an effort to overcome the constraints presented by Cold War blocs.