See also:
www.coindesk.com/report-russians-helped-venezuela-launch-petro/
www.coindesk.com/fake-news-russian-official-reportedly-denies-involvement-with-petro/
goo.gl/WF5qfh
angle.ankura.com/post/102i75p/preventing-the-use-of-cryptocurrencies-to-evade-sanctions