Why didn't Hitler expand his living space westward and ..?

Question:

Why didn't Hitler expand his living space westward and ..?

forge a say 5 year alliance pact with USSR and concentrate on eliminating Britain to built his strength before he take on USSR?

Best Answer - Chosen by Asker: Historian Lidell Hart once observe, "Hitler was the only person Joseph Stalin ever trusted."

Hitler, however, certainly didn't trust Joe Stalin. If he invaded west he'd always have the Soviets behind him.