WW2 - What if Soviets join Axis in 1940

Second World War: what Soviet Union joins the Axis in 1940 and declares war on British Empire? Who would have won? In November 1940 during WW2 there was a negotiation between Soviet Foreign Minister Molotov, von Ribbentrop and Hitler concerning Soviet Union’s entry into Axis. On 25 November 1940, Soviets presented a proposal: they would accept the Axis pact but they asked for a world sphere of influence centered on Iraq and Iran and Influence over Bulgaria, Yugoslavia and Finland. Germany did not respond,