Many readers are familiar with the original petrodollar deal the U.S made with Saudi Arabia.
It was set up by Henry Kissinger and Saudi princes in 1974 to prop up the U.S. dollar. At the time, confidence in the dollar was on shaky ground because President Nixon had ended gold convertibility of dollars in 1971.
Saudi Arabia was receiving dollars for their oil shipments, but they could no longer convert the dollars to gold at a guaranteed price directly with the U.S. Treasury. The Saudis were secretly dumping dollars and buying gold on the London market. This was putting pressure on the bullion banks receiving the dollar.
Confidence in the dollar began to crack. Henry Kissinger and Treasury Secretary William Simon worked out a plan. If the Saudis would price oil in dollars, U.S. banks would hold the dollar deposits for the Saudis.