Reports that at their Camp David meeting in July, Brown gave Bush the green light for US air strikes on Iran - possibly offering support from RAF bases and the British navy patrolling the Gulf - are deeply worrying. At PMQs this week Brown (in answer to a question about Iran from Michael Meacher) once again refused to rule anything out in terms of future action against Iran.
The only long-term solution to Iran's problems is democracy, but it cannot be dictated, Iraq-style, or it will backfire. It can only be encouraged, through dialogue and open economic activity - a fact that Brown has long understood (unlike many of his US counterparts).
Is it not now time for Brown to rule out any British involvement in any future US/Israel military action against Iran? The new round of economic sanctions are unlikely to have any real effect (Iran's biggest trading partner is China) and there will be increased pressure from hawkish Republicans for some kind of preemptive strike against Iran.
Britain cannot and must not be part of any US or Israeli led action. Brown must make this abundantly clear - and soon.