An event that comes to mind, is during a meeting where Stalin proposed they should execute basically all the Nazi leadership because they, you know, led and fought for literal genocide and fascist world domination. America and the UK effectively objected (the exact details are contested).

The result was that the worst war criminals were relocated per Operation Paperclip, and the rest of the West German leadership were basically the same Nazi officers and bosses who were in charge pre-war (and also later in senior NATO positions). The leadership didn't fundamentally change in any way, the Nazis got rewarded with cushy jobs, it could barely be called denazification at all.