By signing the agreement, Hitler avoided the risk of a great war on two fronts. Subsequently, Stalin was allowed to extend Soviet rule over the Baltic states (Lithuania, Latvia and Estonia) and parts of Romania and Finland. The pact was a sham agreement between the two fierce ideological enemies. It allowed Nazi Germany and the Soviet Union to label spheres of influence in Eastern Europe while promising not to attack one another for 10 years. But less than two years later, Hitler launched an invasion of the Soviet Union.