Keir Starmer is facing heat over Peter Mandelson's security clearance for US ambassador role

Keir Starmer is weathering a political storm after it emerged that Peter Mandelson, his choice for Britain's top diplomat in Washington, had previously faced security vetting issues. During a tense session in Parliament, Starmer insisted he was unaware of any lapse in the clearance process, saying the appointment followed standard procedures. But the explanation hasn't quieted critics, who are calling the pick reckless given the sensitivity of the US alliance and Mandelson's checkered past.

Mandelson, a longtime Labour insider and former cabinet minister, is no stranger to controversy. His political career has been marked by resignations, leaks, and close ties to big donors-issues that once led to questions about his judgment and discretion. Now, those same concerns are resurfacing, with some lawmakers asking how someone with such a history ended up in line for one of the UK's most critical diplomatic posts.

The timing makes it worse. With Donald Trump back in the White House and US foreign policy shifting unpredictably, the UK needs a steady hand in Washington. Instead, Starmer's choice has sparked debate about whether the appointment was driven more by political loyalty than diplomatic fitness. Critics point out that Mandelson has no recent foreign policy experience and hasn't held elected office in over a decade.

At Prime Minister's Questions, Starmer pushed back hard, defending Mandelson as a seasoned operator with deep transatlantic connections. He emphasized that the Foreign Office had signed off on the appointment and that he had acted in good faith. But footage of the exchange shows growing frustration from opposition MPs, some of whom openly questioned Starmer's credibility.

Commentators aren't holding back either. In The Guardian, columnist Rafael Behr wrote that the appointment feels like a surrender to political expediency, suggesting that Mandelson was chosen not for his diplomatic chops but for his ability to navigate Trump's inner circle. The piece argues that the move undermines Starmer's promise to restore integrity to public life.

Still, some allies say the backlash is overblown. They note that Mandelson has been trusted with high office before and that security vetting is a complex, multi-layered process. From their view, holding Starmer personally responsible for a bureaucratic oversight sets an unrealistic standard.

For now, the prime minister is standing by his pick. But as questions mount about who knew what and when, the episode is testing Starmer's claim to be running a government defined by rigor and transparency. With UK-US relations under strain, the stakes aren't just political-they're diplomatic, too.