He didn't stab him in the back. If you mean by breaking his treaty with Stalin, he only made any agreement with him until he was ready to act. He did this a lot.
he had intercourse with his sister!
No, Hitler and Stalin never met.
Stalin and Hitler were both equally violent.
Joseph Stalin and Adolf Hitler were both in favor of what?
With Hitler he was a socialist. He had nothing in common with Stalin.
Better read Sir Ian Kershaw's biography ( Hitler 1889-1936: Hubris, (London, 1998) ).There was an unlikely succession of people and institutions who tried to use him to their advantage, then were themselves the victims of another power using Hitler against them.An example: Stalin saved him from a military coup by signing the Ribbentrop-Molotov agreement. By doing that, Stalin dealt a blow to the western allies, and enabled Hitler to purge the army. Of course, about 3 years later, Stalin got back stabbed by the Nazis...
Joseph Stalin and Adolph Hitler were both Communists.
Stalin and Hitler agreed on dividing Poland in the beginning of the second world war, and then Stalin was betrayed by Hitler, and they became enemies.
The issue on which Joseph Stalin and Adolf Hitler did not agree on was property ownership
hitler turned on stalin to get more power during the war, with made stalin an allie.
On the contrary, Hitler lied, or more accruately decieved, Stalin. He attacked and invaded Stalin's country (the USSR), and not vice versa.
Because The Hitler was trying to get to Otherside.
if you mean what did Hitler do after he MET Stalin, he tried to convince him to become an ally, which of course did not happen.