United States expectations that a harsh sanctions regime might cripple Iran may prove a chimera. Though few in the US have noticed, Tehran is not as “isolated” as Washington wishes: it has the majority of the South on its side – not forgetting that China, India, Japan and South Korea buy 62% of Iran’s oil exports. Follow the money and Tehran’s move to torpedo the petrodollar is perhaps one key reason for the mounting crisis in the Persian Gulf.