1. USA or UK
They really won North Africa. They delayed the Germans invasion of Russia in Greece (which may have saved Russia), they were the real code breakers in Europe, the held off the Germans in the Battle of Britain, they secured the Middle East (Palestine and Iraq), they stopped the Japanese, with Indian help, in Burma, they destroyed the German Navy, they were integral in D-Day and the Western Front, they fought the Germans in Norway, they were the first to really set up a French Underground network, they were huge in the bombing of Germany... the UK was insanely important.
A Canadian conservative is one who believes in limited government and that the government should stay out of our wallets and out of our bedrooms.
USA, UK and the West in general had won the war - definitely. Poland just had swapped one brutal occupation regime for another. And Russia had fared even worse: it was forced to accept a triumph of some alien (Marxist) totalitarian madness, as the only alternative to an even more alien (Nazi) totalitarian madness.
If, when defending your support for Donald Trump, and your response is,
"But but but... HILLARY!!!", then you lost the argument before you even began.
You do raise a good point, though, which is effectively WWII didn't really end for Eastern Europe in 1945, at least not with a return to normalcy; it just blended into the tyranny of the USSR for the next 50 years.
"Obamacare delenda est"