Control stratification is a legitimate threat to bitcoin, but I think your fears of threats to a national currency are overblown. There are significant advantag

Control stratification is a legitimate threat to bitcoin, but I think your fears of threats to a national currency are overblown. There are significant advantages to floating currencies, and there isn't much a cryptocurrency can do to attack it. Russia has magnitudes more control over the Ruble's future than any competing currency ever could.