Bulgaria's military takes over the government in a coup.

Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey to the south, Serbia and North Macedonia to the west, and Romania to the north. It covers a territory of 110,994 square kilometres (42,855 sq mi) and is the tenth largest within the European Union and the sixteenth-largest country in Europe by area. Sofia is the nation's capital and largest city; other major cities include Burgas, Plovdiv, and Varna.

The 1923 Bulgarian coup d'état, also known as the 9 June coup d'état, was a coup d'état in Bulgaria implemented by armed forces under General Ivan Valkov's Military League on the evening of 9 June 1923. Hestitantly legitimized by a decree of Tsar Boris III of Bulgaria, the coup overthrew the elected government headed by Aleksandar Stamboliyski of the Bulgarian Agrarian National Union (BANU), and replaced it with one under Aleksandar Tsankov.