I think the saying is "The enemy of my enemy is my friend." Notice that when that second enemy isn't there, the friendship vanishes as well.

Nazis can be accepted while fighting a bigger enemy without having to accept them when the enemy is defeated.

As Stalin said during WWII about working with the west: "You can walk with the devil to the end of the bridge."

But I think Schlock Mercenary has a better take on this: "The enemy of my enemy is my enemy's enemy. No more; no less."

Controversial take.

"Nazis who travel to Ukraine to fight Russians are less bad people doing morally and ethically ambiguous things. Once they leave Ukraine, the actions they performed involving Russians are both unethical (because they willingly travelled there to murder conscripted teenagers) and ethical (because they willingly travelled there, presumably to defend the sovereignty of a nation they have tenuous cultural links with)"

Just wait 'til the Ukrainian Foreign Legion starts to be accused of things like massacres (whether legitimate or false reports for propaganda), then guys who were marching in BLM counter protests who went to Ukraine (again, running with the bad nazis doing good things) will have their social media histories paraded about to defame the entire foreign legion.

But most of the nazis people speak of in the context of Ukraine are not foreigners traveling there, but Ukrainian citizens.

That changes things quite a bit, and definitely goes into the "none of our business, let the Ukrainians decide who is on their side" line of thinking for me, since all most of us are doing is putting blue and yellow on things and pretending that makes a difference.

I wouldn't be comfortable working with a Nazi on a line in a kitchen, just as I'm sure they'd say the same about me, but if Russia invaded here, I'd be quite comfortable "walking with him to the end of the bridge," as the other poster said. Deal with the day-to-day bologna after you've dealt with the once-in-a-century bologna.