 After a June 1940 Soviet Ultimatum demanding Bessarabia, Bukovina, and the Hertza region from Romania, the Soviets entered these areas, Romania caved to Soviet demands and the Soviets occupied the territories.In June 1941, Germany broke the Molotov-Ribbentrop pact by invading the Soviet Union.From the time of this invasion to 1944, the areas annexed by the Soviet Union were part of Germany's Ostland (except for the Moldavian SSR).