You all don't understood concept of dollar and USA.
Simple way to say, USA and dollar is like exchanger the market and whole world is like the OTC real situation wich moves a lot and a lot events and good and bad things crisis and no crisis SO THAT PROFITS COMES from the volatility and moves markets.

On otherwords USD and USA is like exchanger for all the markets and assets and rest of the world will be the real life events and volatility situation.

USA and dollar are just the Market neutral Market and rest of the world when futures options and derivates and financial and banking and money transactions are just the virtual version of the rest of the world situation and real life events including wars.