Belarus sold the s-300's to Iran. Israel payed Belarus to supply s-300's with hidden modifications that allows the IDF to take over control of the launchers and disrupt the missiles flightpass. Belarus makes some dosh on both side and Mahmoud gets screwed 'Iranian style' . All ends well.
Exit polls predict Portugal's center-right coalition set to win election (Reuters)
from the article: Iran official: We have obtained the S-300 missile system