 Complete the following phrase:  Germany and the Soviet Union remained unsatisfied with the outcome of World War I 19141918. Soviet Russia had lost substantial territory in Eastern Europe as a result of the Treaty of Brest-Litovsk March 1918, where the Bolsheviks in Petrograd conceded to German demands and ceded control of Poland, Lithuania, Estonia, Latvia, Finland, and other areas, to the Central Powers. Subsequently, when Germany in its turn 