this is not true,
money must have backed in something, oil, gas, other money, securities, gold, silver, .......
US dolar not backed and he is dead very soon,
Russia and China have signed an agreement for next 30 years and they do not want the dollar,
just Russian ruble and Chinese yuan.
The US dollar is backed by the world's most powerful army and is linked to the petroleum market. It's not going away any time soon.
Not more, world is changed,
Russia and China now have powerful army
and they not more use usd, just national currency, rubles and yuan for next 30 years,
for gas, oil and other.