SWIFT cuts off access to the network for Iranian banks.
SWIFT - a global information exchange system between banks, thanks to which to international transactions, the Iranian banks have been disconnected.
This does not mean total isolation for Iran!
They can buy and sell via Bitcoin.
However, the shift towards Bitcoin or other cryptocurrencies in the case of Iran could have been bottom-up. In May this year Bitcoinist.com reported that residents of this country are spending more and more on cryptocurrencies in fear of economic collapse associated with the restoration of US sanctions.
Similar solutions are implemented by Venezuela. Recently, the government announced that the Petro national cryptocurrency could be exchanged for any digital currency if it was purchased before the end of 2018. Will Iran follow in the footsteps of Venezuela? Well, even if the government of this country does not take the crypto course, it can be done by society.