How much physical gold is available for delivery?
What if Russia announces open ended buying of physical gold at USD$2,000/oz?
5000tons will cost them $321.5billion at $2000 per oz.
As at end of September 2014, Russia has foreign currency reserve of USD$396.4billion.
https://www.imf.org/external/np/sta/ir/IRProcessWeb/data/rus/eng/currus.htm