I don't think that Bitcoin can ruin a Country. I think & believe that Bitcoin is future money, it's have bright future over the world. Look, we live in a digital World, so we need digital money like Btc. I think Bitcoin is a blessing for us.
Hope, Bitcoin will be legalized all countries of this Universe. Just Calm Down.
not everything is so simple, the management of money for the state is the sovereignty of the encroachments of other countries. after the introduction of bitcoin as a means of payment, some countries may become bankrupt.