Due to the sanctions by USA for prohibiting Iran to use USD in international trade, Iran has accepted the use of cryptocurrencies. I am not sure what the right way is to handle Iran but blocking Iran will only make Iran more motivated to use other sources like cryptocurrencies.
What will the next move us USA you think?
Read this article:
Iran Passes Law to Legalize Import Funding Using Cryptocurrencies In the contemporary world, it is a matter of control on their own which means they have the power and they are exercising it to a weak one. Mostly it happens from a superpower country. The USA is trying to make a block in the middle east and the main problem is here to get a counter from Iran. That's why they are trying to stop Iran in many ways. This is one of them and it will continue. That's why Iran is doing many things to counter and accepting crypto currency is needed to avoid us dollar.