Do you remember that there were some legal problems to marry Iranian girls? It’s some months that new laws have stated in Iran and have been issued in Iranian embassies too.
In the matter that all that previous long process will be done just by girl’s request and if she doesnt want it, there is no need to most of those documents! The only condition is that for muslim woman, man need to convert to Islam too. Farsi Source
So based on the laws, in Iran, marriage between an Iranian woman and a non-iranian man is NOT a contract between man and government anymore. Now it’s just a contract between woman and man who decide to marry.. If not all, at least to some extent..