Soviet occupation of Latvia in 1940

The Soviet occupation of Latvia in 1940 refers to the military occupation of the Republic of Latvia by the Soviet Union under the provisions of the 1939 Molotov–Ribbentrop Pact with Nazi Germany and its Secret Additional Protocol signed in August 1939. In 1989, the USSR condemned the 1939 secret protocol between Nazi Germany and itself that had led to the invasion and occupation of the three Baltic countries, including Latvia.

Source: Wikipedia — Soviet occupation of Latvia in 1940 (CC BY-SA 4.0)