COMMENT

"After a long debate, the highest levels of the military could not forecast a way in which things would end favourably for the United States," said Richard Clarke, counter-terrorism adviser in the White House under three administrations. That was back in 2007, and he was talking about the Pentagon's attempts to come up with a winning strategy for a US war with Iran. No matter how they gamed it, the US lost.

Two years later, in 2009, US Marine General Tony Zinni warned that any attack on Iran would lead inexorably to 'boots on the ground'. "If you liked