by keeping the dominance of their paper money.
If you were a counterfeiter, you would do the same. Currently the banksters are printing fiat paper as fast as they can lend it out. Most of their loans are guaranteed by tax payers so they have nothing to loose. The money they lend is merely pulled from thin air and as such if they make a bad loan they need not worry as they just print more. The borrowers however are either too stupid or perhaps complicit in the scam. Why any country would guarantee a loan that is merely a computer entry is beyond me. It even baffles me more when people accept this notion that a group of private bankers can use a phoney promise (fiat money) to purchase things of real value. As long as they can keep people using paper promises, the more assetts they can accumulate.