I don’t know what Iran has to do with this topic but from your link:
Putin has decided to supply S-300s to Iran, thereby expecting gratitude from the ayatollahs and indignation from… well, just about everyone else.
Both his expectations have been fulfilled, but the ayatollahs have reasons to be upset too. First, because he has responded to world outcries by saying that it “won’t be anytime soon.”
And second? Fair enough, the S-300, the world’s first fully automated AA missile system, is a fine weapon. But it was developed in 1979, when the Soviet Union was still alive and kicking.
At that time the S-300 was the best such system in the world. But it no longer is. For in 2004 the Russians developed a significant upgrade, the S-400.
Just more evidence that your boy Putin isn't the wonderful guy you try to make him out to be.