The Big Question: Is this the moment Keir Starmer loses control?

Is this the moment Keir Starmer loses control? The Prime Minister is standing in the eye of a storm of the Mandelson scandal, with questions swirling over what he knew and when with regards to Mandelson's security vetting. Explosive new testimony has claimed the Prime Minister pushed through the approval of Mandelson for US Ambassador, while Starmer insists he was never told Mandelson had not passed vetting.