Only that right after WW2, nuking the Soviets wouldn't have helped. The Red Army had Berlin, had shorter, and well established, supply lines, and the numbers. Nuking Moscow had caused WW3 right after WW2 ended, the Soviets woupd have ended up controlling Germany, and propably other countries. Because a hand full of small nukes wouldn't have been that decisive.
The are reasons Operation Unthinkable wasn't launched. But one has to admit, the anti-communist propaganda that united people from Patton, McCarthy all the way to former Wehrmacht Generals, still has long lasting effects even today.