What is peculiar is how this has become a story about the Tories breaking pledges. It should be nothing of the sort. That 'honour' lies squarely with Brown and Blair. Labour's mock-outraged line that Cameron has '"reneged on his cast-iron guarantee" defies belief; it's incredible, brazen and unmistakably wrong. I expect Cameron to deliver a crushing appraisal of government EU policy and its contempt for voters in the Commons tomorrow.