S-300 was blocked by UNSC resolution. It has nothing to do with Russia. Iran still got it anyway. Iran will buy Su-30 to replace F-14 in the air to air role and Su-24 in the air to ground role.If Russia stales in the sales like they did with the S-300, Iran maybe the launch customer for the J-31 or its successor. This will make for an extra important Xhuhai air show this November, now that the embargo is gone. Iran desperately needs to replace everything its its inventory, so a deal for 100-200 Fighters is not impossible, especially if it’s barter trade for Oil.