Greater Yugoslavia

Yugoslav irredentism refers to an irredentism that promotes a Yugoslavia that has united all South Slav-populated territories within it, comprising its historically united territories of Bosnia and Herzegovina, Croatia, Montenegro, Serbia including the disputed territory of Kosovo, Slovenia, and Vardar Macedonia; merged with territories claimed by Yugoslavists that had not been incorporated within the state of Yugoslavia, including Bulgaria, Western Thrace and Greek Macedonia and in some proposals other territories. The government of the Kingdom of Yugoslavia sought the union of Bulgaria into Yugoslavia. The Socialist Federal Republic of Yugoslavia under Josip Broz Tito sought to create an integral Yugoslavia that would incorporate within Yugoslavia's borders: Greek Macedonia and Thrace, Albania, Bulgaria, at least a portion of Austrian Carinthia or all of it, and for a time beginning in November 1943 had claimed the entire Italian province of Friuli-Venezia Giulia.

Proponents of Yugoslav irredentism included both monarchists and republicans. Days prior to Yugoslavia's creation in 1918, Yugoslavist politician Svetozar Pribićević declared that Yugoslavia's borders should extend "from the Soča up to Salonika". Proposals in the interwar period to include Bulgaria within Yugoslavia, included claims by republicans that a republic was necessary for an Integral Yugoslavia with Bulgaria, while others claimed that a republic would not because Bulgaria at that time was a kingdom, and instead claimed that a limited constitutional monarchy would be an appropriate form of state that could include Bulgaria within it. The militant movement Zveno in Bulgaria supported an Integral Yugoslavia that included Bulgaria as well as Albania within it. The Zveno movement participated in the Bulgarian coup d'état of 1934, the coup supporters declared their intention to immediately form an alliance with France and to seek the unification of Bulgaria into an Integral Yugoslavia.

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