Polish-Romanian Alliance

The Polish–Romanian Alliance was a series of treaties signed in the interwar period by the Second Polish Republic and the Kingdom of Romania. The first of them was signed in 1921 and, together, the treaties formed a basis for good foreign relations between the two countries that lasted until World War II began in 1939.

Immediately after World War I, the peace treaties recognized the reestablishment of a Polish state for the first time in over 100 years. Romania emerged from the war as a victorious nation, enlarging its territory (as Greater Romania). Both states had serious reasons to stand by these treaties.

Having established contacts with Poland in January–February 1919 (after Stanisław Głąbiński's visit to Bucharest), Romania oriented itself towards a cordon sanitaire alliance aimed at Bolshevist Russia and the newly created Comintern; the proclamation of the Hungarian Soviet Republic, the German insurrection, and the Red Army's capture of Odessa alarmed politicians in both countries. The diplomat Czesław Pruszyński reported to the Polish government:

"A dam that can put a stop to Bolshevik pressure on the West is constituted of Poland to the north, and Romania to the south. [...] There is a natural necessity, but also a historical necessity, that, based on the mutual interests of Romania and Poland, a military alliance be sealed in front of the common threat facing them."

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