About 7 months ago, I noted that Turkey was looking to buy Russian SAM Systems.

We have another report , and this adds the S-400 (NATO Code Name SA-21 Growler) to the list.

It is arguably the most capable SAM system in the world with a range in excess of 400 km, and a sophisticated control system that may allow for some anti-stealth capabilities through sensor fusion and data processing, along a significant anti-missile capabilities, which might very well provide coverage from something fired from Iran.

What is interesting here is that the story is not that the manufacturer is saying that Turkey wants the system, not that a contract has been inked, and the system has yet to be exported, and I am not sure that if I were Russian authorities, I would want a NATO ally, who would be very likely to pass along data on this system to the US, to get their mitts on this.