The story was broken by Die Welt on November 25th, but for some reason we haven't heard any outcry. Last week, Hudson-NY wrote about it and adds more details:
Venezuela has also become the country through which Iran intends to bypass UN sanctions. Following a new round of UN sanctions against the Islamic Republic, for example, Russia decided not to sell five battalions of S-300PMU-1 air defence systems to Iran. These weapons, along with a number of other weapons, were part of a deal, signed in 2007, worth $800 million. Now that these weapons cannot be delivered to Iran, Russia is looking for new customers; according to the Russian press agency Novosti[2], it found one: Venezuela.
If Iran, therefore, cannot get the S-300 missiles directly from Russia, it can still have them through its proxy, Venezuela, and deploy them against its staunchest enemy, the U.S..Why isn't this story on the front page of every major US newspaper?