Shinpachi - San, The Russians were always expansionist and non trust-worthy.
You probably have heard about Russo-Persia wars in late 1700's to middle 1800's ... In short, they captured Caucasus and Turkmenistan from Iran, or Qajar dynasty. Regimes changed, but lost lands never returned.
As I said before, there are "unsolved problems" from past, which cause bigger problems today.
Needless to say what happened later, during both world wars...
My country was neutral in both wars, but was ransacked by those who called themselves saviors... Search about great famine in Iran during ww1.
Same goes for ww2... My country was neutral, but again ransacked by those who claim fighting for freedom!!!
There are such problems with Arabs, Turks, British, American and so many other ones... Debts needed, and will be collected, either from respectful means, or by force, fear and terror.
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A4K , Regarding Ukraine, I really don't care too!
There are way more important things, in my country that need attention and act. When no one cares about us, why we should care about others???
When my people were slaughtered by regime's hunting dogs, did they support us? Did any country send arms and armour for us? Did any of those so called "best and most powerful" Airforce, Navy, Ground Forces of the world, did anything for us??? No, they didn't. They can rot in hell, forever.
Future relations between Iran and any other countries, will be based on how much terrorists have they slaughtered, or how many terrorist dens and cells have they destroyed.