Sarah Montague, who is interviewing Nick Clegg, moves on the Lib Dem politics. Q: You were apologising for making the tuition fee pledge, not the pledge itself. Clegg says the Lib Dems signed a pledge saying they would vote against tuition fee increases in any circumstances. That was wrong. Ed Balls has still not apologise for pushing the economy to the edge of bankruptcy, and Ed Miliband has not apologised for Iraq, he says. Miliband was not even in parliament at the time of the Iraq war, and he won the Labour leadership partly because he said the war had been a mistake. Q: This pledge was central to your campaign. Clegg accuses Montague of "rewriting history." He focused on the Lib Dems's four priorities: raising the tax allowance, the pupil premium, reforming banking and political reform. Being a strong leader creates a reaction, he says. Q: This pledge was "breathtakingly cynical." Danny Alexander has said he thought the pledge was unaffordable. Clegg says that if the Lib Dems had won the election, he would have delivered on his promise. But he has only 8% of MPs, he says. Q: But you adopted a policy that was undeliverable. Clegg does not accept this. A Lib Dem government could have got rid of tuition fees over six years. He turns to the business bank. It will help thousands of people. And he mentions the "pensions for property" plan. "It's good stuff," he says. Q: So why did you apologise now? He says he apologised for the pledge. What was wrong about the pledge was that it was unqualified. Labour and the Conservatives were determined to put tuition fees up. Labour introduced tuition fees and commissioned the Browne report, which would have recommended tuition fees with no upper limit. Clegg says in the future he thinks other parties will follow the Lib Dems in making a distinction between key priorities, ones that they will "die in the ditch for," and other policies.