Trump ramped up his trade threats against a group of nations that are skeptical of the dollar. Here's what the US buys from the 9 countries at risk. Business InsiderTrump Threatens BRICS Countries With 100% Tariffs If They Ditch The Dollar OilPrice.comTrump's trade threat runs into inconvenient dollar truth: McGeever ReutersHow an upstart global payment system led to Trump's latest tariff threat Yahoo Finance