Per Aviation Week's Day Four recap of the Paris Air Show, Syria is going to be acquiring MiG-31E's via Iranian funding and Iran themselves could very well be acquring both MiG-31E's as well as brand new MiG-29M/M2 aircraft via Belarus so the bill of sale will not be listed as Iran being the ultimate end user so as to get around the West's objections.
Reports also state that Iran is close to signing a huge order for 250 Su-30Mk's with Russia's Rosobornoexport (ROE) to replace all their 1970's US combat aircraft which might include licensed production rights to produce their own; this would be the largest single order for the aircraft ever. However, this version includes French Thales avionics and they might not be willing to sell them anything given the current nuclear issue with pretty much everyone else in the world save Russia and China - but I would imagine that would not be a huge deal breaker and they would acquire something comparable to get the deal done.
Reports also state that Iran is close to signing a huge order for 250 Su-30Mk's with Russia's Rosobornoexport (ROE) to replace all their 1970's US combat aircraft which might include licensed production rights to produce their own; this would be the largest single order for the aircraft ever. However, this version includes French Thales avionics and they might not be willing to sell them anything given the current nuclear issue with pretty much everyone else in the world save Russia and China - but I would imagine that would not be a huge deal breaker and they would acquire something comparable to get the deal done.