If country government want higher taxes or make some larger country debt, it can buy more weapons, for example some extra submarines. For example US Virginia submarine costs 2.68 billions USD. The same weight gold - 7900 tons costs around 0.3 billions USD only. See link here - https://en.wikipedia.org/wiki/Virginia-class_submarine. If Donald Trump will make some new submarines, it will cost some more billions USD from taxpayers.