Was sacking Sir Olly Robbins over the Mandelson vetting the right call?

Sir Olly Robbins was sacked as Foreign Office permanent secretary after granting Lord Mandelson security clearance for UK ambassador to the US role, despite raised concerns, without informing PM Sir Keir Starmer. Starmer called it staggering that officials withheld information and sent a letter valuing civil servants speaking truth to power amid the unsettling events. Some officials feel exposed by Starmer's actions and fear increased risk aversion from eroded trust.