Seeing as some left to Argentina or were recruited by the US and the USSR for NASA, no they never were de-Nazified, they just wiped the blood off their name tags.
Yep, prominent Nazis were even given leadership of NATO, such as Adolf Heusinger. The Soviets ended up being far harsher to the Nazis, hence why so many fled to Latin America to get away. Makes sense, considering the absolute devastation the Nazis wrought on the Soviets and the 20 million Soviet lives the Nazis took, and how comparatively little the US saw, as the 2 major powers emerging from World War II.
"No you can't bring up that NATO had actual Nazis with blood on their hands as leaders! Especially ones that tried to make a new Waffen-SS in the 50s! That's unfair!"
Yep, people love to reflexively defend NATO, as it's very effectively pitched as merely a "defensive alliance" when it has always served as a coercive arm for the US to pressure its geopolitical adversaries, especially the Soviets, hence why they worked with the most effective anticommunists, the Nazis. If you don't play along with NATO, then they pull Operation Gladio on you.
And russian bots love to attack NATO because it prevents their dictator putin from conquering all previous USSR territories that became sovereign nations.
NATO wouldn't be necessary if Russia stopped invading other countries. So you can blame putin for that.
Fascism is generally Capitalism's immune system as it declines, meant to violently root out leftist opposition as workers begin to protest their conditions.
I'd generalize it a bit to say, fascism is the immune system of any system built on bad principles that's collapsing under the weight of its own internal contradictions. The obvious decay then creates a space psychos and grifters to pose as faux saviors and gain power by scamming people into something they pretend is a solution but is actually a death cult.
I think that's unique analysis, for sure, but I'd keep it to Capitalism. Historical movements recognized as fascist, such as Italian Fascism and Nazi Germany, arose specifically in decaying Capitalist economies where a millitant working class was growing, and the fascists slaughteted the Communists and Socialists. I recommend reading the first chapter of Blackshirts and Reds (though the whole book is fantastic).
That’s the thing: you can’t kill an idea by killing the man. The idea only dies with good education, proper social support, social cohesion and good (economic) prospects for the future. Same goes for Hamas IMO: try to kill as many soldiers as you can, the collateral damage among civilians breeds only the next soldier in line