Tory Strategy Unravelling

• David Cameron's strategy of nods and winks is unravelling as Tory tax and spending pledges continue to fall apart.

• Last week Cameron got in a mess over his marriage tax proposals and he still hasn't spelled out exactly how he will carry out his promise.

• Yesterday he couldn't make clear whether he would match George Osborne's commitment to reverse National Insurance increases.

• And today the Conservatives pledge to introduce three extra army battalions is coming under increasing scrutiny.

• David Cameron needs to come clean with people on National Insurance, married couples allowance and the rest of his £34 billion of unfunded promises and set out exactly what his policies are and how he will pay for them.