This explanation is very poor. At their core countries have no feelings, there is no ill will or true adversary. There is a current interest for your people and

This explanation is very poor. At their core countries have no feelings, there is no ill will or true adversary. There is a current interest for your people and economy. It is very much in Russia's interest to annex Ukraine, it has nothing to do with US bullying, etc. If Saudi Arabia were not a US ally the Iranian government would find no reason to really look at the US as a foe. Iran and Saudi Arabia have a balance of power to dominate the middle east and Saudi Arabia (with the help of the US) stands in the way of that, and that is why Russia helps Iran to counterbalance that. Historically Iran and Russia do not have alignment in their interests otherwise. I suspect you see the world this way because you basically 'stand where you sit', but you have to look at it from the point of view of the other side and where people stand where they sit there too. I.e if you were born & raised & were wealthy/vested etc on the other side would your opinion flip. Your opinion should flip, and then of course with both opinions against each other it ends up becoming about having more power, having alliances and playing cards right.