Keir Starmer announced his intention to step down as Britain’s prime minister on Monday, succumbing to intense party pressure as his popularity plummeted and rivals have manoeuvred to challenge him.Starmer made the announcement on the same day his likely successor, Andy Burnham, was due to be sworn in as an MP after winning a pivotal vote last Friday.For months, political buzz has been building around 56-year-old Labour Party veteran Burnham, who is widely known across the UK as the “King of...