Mr I'm A Dinner Jacket is clearly an unreasonable nutball. Perhaps not as stupid as people paint him. That said, his government, whoever it is that runs it is clever in pushing back against the world community.
This was definitely a diplomatic coup for Iran and as Tom Paine summarises, the issues raised are far reaching. In the end the intervention of the Americans was likely the factor that led to the release rather than the hand wringing of Britains European buddies, who didn't want to jeopordise the Iranian economic gravy train.
