UK Prime Minister Keir Starmer is under increasing pressure following revelations that he was unaware of Peter Mandelson's failure to pass security vetting before his appointment as ambassador to the United States. Starmer expressed his anger at not being informed about Mandelson's vetting status, especially while assuring Parliament that due process was followed. A report confirmed that the Foreign, Commonwealth and Development Office (FCDO) overruled the initial vetting failure to allow Mandelson to take up the post. Starmer has committed to clarifying the situation in Parliament on Monday. Opposition leaders, including Kemi Badenoch from the Conservative Party and Ed Davey from the Liberal Democrats, are calling for Starmer to take full responsibility, with some suggesting he should resign if he misled Parliament. This controversy arises at a critical time as local elections are approaching, where Starmer's party is expected to face significant challenges.