There is a huge difference between "nationalists" and Nazis. We have the Scottish National Party as the govt in Scotland. They are democratic, leftist, socially liberal, inclusivist , pro EU, refugee friendly (relative to England) and want independance from the UK. They have several ministers of South Asian origin. Their nationalism is about self determination. Nothing more .
The Ukrainian Azov are neo Nazis. How else could you describe the adoption of the Black Sun symbol- purely created for Himmler in WW2-with NO ancient runic history . They are totalitarian, socially illiberal, anti democratic, anti Semitic, white supremacist and their allies, fundamentally are not other democratic "nationalist" Ukrainians but other pan European/American neo Nazi movements like themselves. They are the European ISIS. They are a very dangerous force of darkness at the heart of Europe and right now, if I was Jewish, brown, black, gay in the Ukraine, I would be seriously concerned about the aftermath of this war which Ukraine will lose-one way or another- in the end. European history's precedent teaches that any and all of the above groups will always be a scapegoat for war and defeat. You will see.