Paul Blustein, author of King Dollar: The Past and Future of the World's Dominant Currency, joins OMFIF to discuss his latest book and thoughts on why the dollar has been, continues to be and will remain the world's dominant currency.  He discusses why the euro and renminbi are not viable alternatives, whether there is a role for cryptocurrencies and stablecoins, if excess US use of financial sanctions could weaken the dollar's global role and what other landmines might lie ahead, including American dysfunction.