15th » Kingdom of Romania establishes its legation in Helsinki.
20th » The Young Communist League of Czechoslovakia is founded.
21st » Rezā Shāh takes control of Tehran during a Iranian events of 1921 named successful coup
22nd » After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the khan (title) called emperor of Mongolia.
25th » Tbilisi, capital of the Democratic Republic of Georgia, is Soviet invasion of Georgia called occupied by Russian Soviet Federative Socialist Republic called Bolshevist Russia.
27th » The International Working Union of Socialist Parties is founded in Vienna.