LOL!!
Next time at least bother to try and do some basic research on the issue before you post m8,that way you might avoid looking as stupid as you do right now.
Russia only provided the system because it was facing having to pay out over 4 billion [$4,000,000,000] in compensation for breach of contract over the original s300 deal,the sale and delivery of this system were not in violation of sanctions,that was just yet another russian excuse.In addition the russians only did this after irans indigenous s300 class bavar 373 sam was already well advanced in development.
Russia IS NOT AN ALLY OF IRAN,it never was and likely never will be.The only single thing that the russians have ever shown themselves to be reliable with in all of their dealings with iran,was their near total and complete utter UNRELIABILITY.
If russia was an ally it would be a very,very poor one,and thats putting it very nicely.