Russia Continues to supply Germany and the USA continues to support the Wallies
Given that Uncle Joe is no where near as rich as Uncle Sam and the fact that Britain and France have their Empires to call upon - the Wallies ultimately win - Germany Collapses (Barbarossa never happens) and a very Frosty Cold war entails.
Mussolini dies with a smile on his face in some other man's wife's bed sometime in the 60s famous for developing the fledgling Italian / Libya oil trade.
Japanese leaders eventually bow down to US sanctions and a sort of peace descends on the area - FIC is never invaded - and the Pacific war is a massive what if on dodgy forums like I dunno 'Alternative Historical events.com' - something like that