There is an old story about an Arabic country that on an incidence owed money to western governments , what they did is they played broke and having no money so had to sell there gold to pay the det .
So the country put there gold out to the market to be sold hah but western countries had there move ready and they also offered gold to the market and the gold price dropped dramatically due to high supply .
What they didn't account for is it was a plot from the Arab country from the beginning and when the price of gold dropped that Arab country bought it all and pulled there gold out off the market .
Making shortage on gold and price rises they sold back that purchased gold and paid there debit with the price difference .
Disclaimer ; I'm not saying that is 100% happened only what i heard .