Albanian–Yugoslav border war (1921)

Albanian–Yugoslav border war
	Part of the Interwar period
	; A New York Times headline from 9 November 1921 about the Yugoslav incursion in Albania
Date	17 July–20 November 1921
Location	Principality of Albania
Result	Albanian victory; Yugoslavia and Greece withdraw due to international pressure and Albanian resistance; Mirdita Rebels neutralised; Dissolution of the Republic of Mirdita; Defeat of the Yugoslav policy of military engagement in Albania;
Belligerents
Principality of Albania; Diplomatic Support:; Italy	Kingdom of Serbs, Croats and Slovenes; Kingdom of Greece; Republic of Mirdita; Army of Wrangel
Commanders and leaders
Pandeli Evangjeli; Ahmet Zog	Peter I; Constantine I; Marka Gjoni ; Pyotr Wrangel
Strength
Unknown troop strength	Unknown troop strength ; Unknown troop strength ; 1,200 Russian Mercenaries
Casualties and losses
Unknown number of casualties	Unknown number of casualties

The Albanian–Yugoslav border war of 1921 arose from disputes over the borders of the newly established Principality of Albania after the First Balkan War. Although the 1913 Treaty of London outlined general territorial terms for Albania, precise borders remained unresolved amid the chaos of World War I, the Paris Peace Conference, and the League of Nations' formation. With the League failing to reach a verdict for a year, Yugoslavia, spurred by the Mirdita rebellion, asserted territorial claims and deployed troops to the border. As tensions escalated, League intervention became imperative. The conflict concluded after the United Kingdom recognized Albania, prompting Yugoslavia to withdraw its forces. Subsequently, diplomatic ties were established between Albania and Yugoslavia, leading to Yugoslavia's acknowledgment of Albanian sovereignty.