The dollar's already affected and nobody's going to help Uncle Sam. We shouldn't be surprised.
Iran exports oil to Europe, so it makes sense for them to trade in Euros. I don't think it means a thing in toto. Europe was going to buy their oil from Iran whether in dollars or euros. The value of the dollar is not determined by Iranian oil shipments. The dollar trades on our competitiveness relative to other currencies/economies. The European economy is stillborn and the Iranian economy barely registers worldwide.
dollar is under attack tonite here in asia -