What next for Starmer? Five scenarios in Labour leadership crisis

Pressure on Prime Minister Sir Keir Starmer has intensified this week with resignations and a revolt from some MPs. Andy Burnham is seeking to stand in a by-election triggered by the resignation of a Labour MP, while Wes Streeting resigned as health secretary, calling for a debate on the party's next leader. Despite these tensions, there is currently no leadership contest underway.