The defence secretary has resigned over the government’s military spending plans, in another major blow for Keir Starmer. In a scathing letter to the prime minister, John Healey said the long-awaited defence investment plan ‘falls well short of what is required for defence’ and that he would have to take decisions that ‘could make Britain less safe’. Nosheen Iqbal speaks to policy editor Kiran Stacey. Help support our independent journalism at <a href="https://www.theguardian.com/politicspod">theguardian.com/politicspod</a>