Pippa Crerar of the Daily Mirror discusses the war in Ukraine and the implications for UK defence spending with the chair of RUSI, and former de facto Deputy Prime Minister, Sir David Lidington, and the Director of the Institute for Government, Bronwen Maddox. The SNP's Deputy Westminster leader, Kirsten Oswald MP, and The Spectator's Scotland Editor, Alex Massie, analyse Nicola Sturgeon's announcement about a future independence referendum in Scotland. Ian Todd, chief executive of the Independent Parliamentary Standards Authority, discusses why there are ongoing misconceptions about MPs' pay and expenses. And, following a stunning victory in the Tiverton and Honiton by-election, Pippa brings together Polly Mackenzie and Sean Kemp, two former Liberal Democrat advisers, to ask if the party is back in business.