> The dollar isn't what's being protected, what's being protected is the entire economic system of the USA that is dependent on oil.
The two are inextricably linked. You could not run an economy of this size without a currency to underpin trading value and denominating debt. So defending the strength of the economy is defending the strength of the currency the economy is denominated in.
The two are inextricably linked. You could not run an economy of this size without a currency to underpin trading value and denominating debt. So defending the strength of the economy is defending the strength of the currency the economy is denominated in.