Committee on Payments and Market Infrastructures released a paper like 2-3 days ago claiming national cryptocurrencies (initiated by central banks) are a threat to financial system. Report shows the competition between these currencies and fiat money will cuase several issues in banking system. Taking it into account, it's hard to believe that other countries will tolerate this. Unless USA, China, Germany, Russia , Japan and others from G20 will not issues own currencies (and aparantly they will not) these El Petro and it's friends will face sanctions of some kind.

Link to report for reference: https://www.bis.org/cpmi/publ/d174.pdf