Russia’s vaunted S-300 and S-400 missile systems have been in the news quite a bit of late.
Last month, Moscow and Tehran officially revived a long stalled contract worth some $800 million that will see a handful of S-300s delivered to Tehran over the next several months. The deal was initially reached in 2007 but was put on hold in 2010 amid the international sanctions on Iran. Putin lifted the ban earlier this year, citing progress on the Iran nuclear deal.