Iran has started to do 90% of it's international trade in Euros and Yen, and the US starts going ape-sh!t bananas with sanctions and the like...sound familier? yeah, it happened in 2000 with Iraq, Saddam also started trading Oil in Euros, which argueably was one of the major reasons for the US to invade Iraq (and also a main reason for the French/Russians to oppose the war). There is a problem this time though, war with Iran is impractical and too obvious, even with the WMD card. So brute force will not work this time around. The Chinese this time are also in support of Iran due to China's interest in seeing it's reserves of US dollars decline. China refuses to impose full sanction against Iran, in fact ever since the invasion of Iraq China and Russia have been arming Iran's military to make the idea of a US invasion ever more unappealing. The US cannot allow other currencies to gain too much of a reserve status due to the need for the US to sell off it's debt to (mostly China/Japan) other countries to prevent inflation and the value of the US dollar declining "too" rapidly. The world is starting to notice just how deeply commited the US is at this goal. Are we delaying the inevitable though? China and Japan are already holding fewer and fewer dollar reserves anyway, OPEC still wants to trade in Euros and Yen, can we really keep fighting a losing war?