Is Keir Starmer's leadership undermined by the Mandelson vetting row?

Morgan McSweeney, PM's ex-chief of staff who advised appointing Lord Mandelson as US ambassador, will give evidence to the Foreign Affairs Committee on vetting concerns. Sir Olly Robbins accused No 10 of a dismissive attitude towards security vetting, denied by Downing Street. The row has reignited Labour MP questions about Sir Keir's judgement, with one MP doubting he can lead into the next election.