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 CryptocurrenciesIf anything I am surprised this took so long, may be it is because the market of cryptocurrencies was not big enough for countries to be able to pull something like this but as this market gets bigger then we will see more of this.
Just prepare yourself as this will be used as an excuse of why cryptocurrencies need heavy regulation, it seems governments have finally realized they cannot kill bitcoin directly and they are trying an indirect approach by using the media to portray bitcoin as the currency of criminals and rogue states and then use the laws to make compliance with the regulations so hard that many will just avoid cryptocurrencies so they do not have to deal with those regulations.