It's isn't a coincidence that Maduro signed a huge oil deal with China but excluded the dollar as means of payment.
Trump is bedwetting about the decline of the petrodollar, forget about WMDs, nuclear weapons , drug smuggling and Islamic terrorism, the biggest threat to America is the dumping of the dollar by country's that no longer trust the U.S. as a reliable trade partner.
America's ability to run huge to deficits is based on the dollar as world reserve currency, the world is using the dollar less and less, every percentage point drop in the use of the dollar internationally costs the Americans 350 billion.
If the world stops buying American debt , then America is funked along with Europe.