Roosevelt looses the 1940 elections.
Summer 1941, allies occupies the Rhineland, in the process occupies Belgium. Massive casualties on both sides in slow movement warfare but with more ressources and industry, the allies triumphs and Mussolini joins them.
Germany is occupied by France and the UK while Mussolini expand Italian influence in the balkans.
No Roosevelt nor Vichy France to allow Japanese in Indochina, oil embargo never happen. No Pearl Harbour nor Pacific war, US retreats from Phillipines.
Military junta is restaured in Poland and the strenght of its armies are rebuilt with allied equippement, it decide to take back territories taken by the Soviet-Union.
The allies battle the Soviet-Union but is already weakened by the war against Germany, the Soviet-Union fully mobilises and after some times the Red Army smashes the Franco/English entente. The Japanese joins the Soviet-Union, striking at colonial south-east asia, along with Mussolini settling for Egypt and more of East Africa.
United States have an isolationist governement, that re-armes after the fall of Paris but doesn´t intervene.
Cold-war between the Soviet-Union stretching over France/Belgium/Germany/Poland/Holland, middle-east and India against the UK, the rests of its empire and colonial remnants of its ex-allies.
UK colonies starts breaking appart in independist movements striff, UK economy collapses in the 50s (No Marshall plan) and internal strife shatter the empire and its vassals in the 60s.
In the 1970s, a right-wing United States not satisfied with south america decide to divide Africa in spheres of influences with the Soviet-Union and/or Italy.
Ex-GB, Irland, New Zealand, Australia, South Africa have the US army moving in (Operation Enduring Order) and are eventually annexed in the 1980s.
In 2010, the two super-powers sometime cooperate but cares little for what happen outside of their sphere of influence, while the New Roman Empire and the Asian Cooprosperity sphere still struggles to become superpowers too.