As far as I understand it this is a move by governments to prevent money from leaving their borders. VND is a currency useful only in Vietnam. Bitcoin has no borders - this means they can't constrain that value inside the country.<p>I feel like I've only scratched the surface as to why governments would want to do this. What else is there?
> As such, Bitcoin and other similar virtual currencies are not legal means of payment in Vietnam.<p>How can you make a means of payment illegal? Is bartering illegal, or do I <i>have</i> to use cash or checks? I don't understand how you can legally block the use of a cryptocurrency without ruling these out.