What Were Hitler’s Plans for the Soviet Union?

At the beginning of World War II, the relationship between the Soviet Union and Nazi Germany was closer than it was at the end of the war. The Soviet Union and Nazi Germany signed a nonaggression pact in 1939, and both countries invaded and swiftly defeated Poland and the Polish army.

Under the conditions of the pact, the Soviet Union received the Baltic States (Estonia, Latvia, and Lithuania), while Hitler received most of Poland. However, this was not enough for Hitler and he wished to gain control of all of Europe.

Ignoring the pact with the Soviet Union, Hitler decided to invade the Soviet Union with a surprise attack known as Operation Barbarossa in 1941. Why did Hitler break the pact he made with Stalin, and what did he want to achieve by invading the Soviet Union?