The term is not generally used outside the former Soviet Union, and the closest term is "Eastern Front of World War II" (1941-1945). Neither term covers the initial phase of World War II in Eastern Europe, during which the USSR, then still in a non-aggression pact with Germany, invaded eastern Poland (1939), the Baltic states (1940), Bessarabia and Northern Bukovina (1940) and Finland (1939-1940).