The main reason other countries want to keep their money in the U.S. (currency) is because the U.S. is the biggest, baddest muh-ther-humper in the world.
It is precisely because of our nuclear arsenal umbrella that people WANT to keep their 'treasure' in U.S. denominations. It is an insurance policy, sort of like keeping your gold in Fort Knox.
The rich Arabs don't want to keep their fortunes locked into the Euro... because Europe might just break apart or squabble into pieces in the near future.
Just look at history and you will see the future.
“It is precisely because of our nuclear arsenal umbrella that people WANT to keep their ‘treasure’ in U.S. denominations.”
True, but they don’t want to have their money in the currency of a country which is monetizing its debt while running a monstrous deficit and letting its currency fall 10%+ annualized.