@unabomber >"By not involving USD in all subsequent international trade, foreign demand for US treasuries (to store trade surplus) reduces"
The only reason the US dollar is as strong as it is is because of this foreign demand. The "petrodollar" ensures this remains the case. If demand goes down, the entire empire will crumble. Well not so much crumble as there will be a market correction, and we will see how good US economic productivity really is.