In November 1939, the Soviet Union invaded Finland, resulting in stiff losses and the entry of an interim peace treaty in March 1940 that granted to the Soviet Union the eastern region of Karelia (10% of the Finnish territory). In mid-June 1940, while international attention was focused on the German invasion of France, Soviet NKVD troops raided border posts in Lithuania, Estonia and Latvia and replaced each government with pro-Soviet politicians, who then requested entry for their respective countries to the Soviet Union. In June, the Soviets issued an ultimatum demanding Bessarabia, Bukovina, and the Hertza region from Romania. After the Soviets had agreed with Germany that they would limit their claims in Bukovina to northern Bukovina, Germany urged Romania to accept the ultimatum. Two days after the Soviet entry, Romania acceded to the Soviet demands, and the Soviet Union occupied the territory.