Exactly. Ship-borne trade across the Caspian between Iran and Russia has been growing steadily since 2000 despite sanctions. One tell-tale sign of that is a spike in the production of river/sea class container ships by ship-yards on the Volga and modernisation of Iran's Caspian ports. So, once Iranian economy improves, already existing trade nomenclature will grow even more. Plus, with the lifting of sanctions, Iran will be able to buy things it previously could not, hence the purported 21 billion dollar deal.Though interestingly enough Iran will spend quite a bit of their oil money in Russia. They're already sniffing around the Sukhoi SuperJet, and there's rumors of a 21 billion dollar mega-package for various high-tech goods and services for Iran, from another nuclear powerplant to passenger jets, helos, etc. Details, of course, are lacking.
I've also heard that, once production increases, some of the oil for European markets might be sold via Russia potentially resulting in considerable profits for Russian logistics companies.
Feanor, do you think helicopters in Latakia already have Russian engines? I know that some that were previously made by Motor-Sich are now made by Klimov. I thought it would be too early to send helicopters out with essentially unproven engines. Or rather, proven designs as manufactured by Ukrainians.