The only thing I can think of is that Germany might not have gone Communist.....if so, then this might have prevented the Second Russian Civil War that started just before WWII(Stalin was assassinated in '38, by none other than one of the men he tried to purge), which ended with the 'Whites' back in power in 1946(Russia was neutral in WW2 for that very reason) and that led 44 years of worrying that the Tsar might drop nukes on our heads at any moment. Whether or not the Silent War, or an ATL equivalent, perhaps would have just occurred with the U.S.S.R. instead of the Reformed Empire is a very interesting question that could be debated for weeks on these boards, as well as if Hitler had somehow managed to come to power(he had been working on an auto-bio when he was killed.....which, btw, ended up as the inspiration for the conspirators who tried to overthrow the governments of Haiti and the Dominican Republic back in '83, including the failed writer known as George Lincoln Rockwell, and they damn near succeeded, too, if it wasn't for the actions of President Carter; some people still suspect this may have been the motive for his assassination in '85.)....if he had, we would have been fighting him instead of the revived Austro-Hungary[1], the breakaway Kingdom of Sicily(including most of southern Italy as well as Sicily and Sardinia......btw, Umberto II was a real bastard. Maybe he would've found a kindred soul in Adolph, perhaps?), and Franco's Spain.
OOC:
[1]Austria-Hungary came back together in 1924 after a large number of anti-socialist protests in both nations.....though as a republic this time. Croatia, along with the annexed Slovenia, joined in 1925 after the King of Yugoslavia was brutally murdered in a Marxist coup.)