No state will declare it so - instead it will happen as a consequence of human action in the free market. Gold will be one of the few assets that will hold its value over the next 10 years. Buy it to hedge against the real threats of hyperinflation and or depression. Buy Gold to speculate on the next big Gold bull market. A commodity this low should be bought on reflex.
Gold is the most transportable form of wealth.
In times of war when you have to leave your house and business in the hands of others - gold will be the only property that you can run with. Gold has real intrinsic value and uses. Besides being the natural money of man gold has many industrial uses that give it value. Gold is a natural element with a scarce quantity. In fact all the gold ever recovered in the world would fit in a cube with dimensions of 20 yards.