The same applies today, we in the west, including NATO, are not willing to risk nuclear war to help the Eastern Europeans with their Russian problems. They are on their own and that is how it should be. They can fight their own small insignificant wars. The pictures you to promote war in Ukraine does not change the equation.
As for helping Iran and North Korea, that is more fantasy than reality. Iran will take help from whoever they can get it from, It is obfuscatory to claim that Russian enriched uranium supports Iran's weapons programs. Russia does the enriching in that case not Iran and the fuel can be easily tracked. The spent fuel is a different story and could be a problem if Russia does not retrieve it.
"This is how it should be" has resulted in millions of deaths and generations of people living under tyranny. This is stupidity. The main target of Russia and China is not Europe, but the United States. Their aggression in their local areas is just part of their overall war against Western values such as Freedom. You do not understand the anti-Western ideology of the Communists and Tyrants who face us. It will not stop with Ukraine, and then Estonia, and then Poland.
Who said anything about Russian enriched Uranium? The issue is Nuclear technology and political cover in the UN allowing Iran time to get the bomb.