I keep pointing people to the FAC proceeding where the two people who do understand the system, Robbins and Wormald were questioned by the committee.
This analysis from Alex Wickham from Bloomberg is closest to what Robbins and Wormald said:
BREAKING: Olly Robbins felt bound by the rules of the security vetting process NOT to tell the PM, No10 or the foreign secretary about the concerns raised about Mandelson That means it appears No10 WERE in fact unaware he had issues with his vetting … in fact Mandelson DID NOT simply fail his vetting. Instead issues were raised and the FCDO security team and ultimately Robbins had to make a decision on whether to grant him DV clearance. It was their decision and there was no “overturning,” … Robbins was prohibited from sharing information about what happened with anyone outside the FCDO security team … the point of the vetting process is that it is extremely invasive and people who go through it must be confident they can tell the whole truth and not have highly embarrassing information about their personal lives leak or be spread around colleagues That means the circle of people allowed to know about what happens in each vetting case is very small and the information is highly privileged The decision on whether to approve Mandelson’s clearance, according to the vetting rules, is taken by a small team of FCDO security officials and ultimately Robbins. Under no circumstance is Robbins or that team able to share the details of the vetting case with No10 or anyone else. Robbins felt he could not share it with any minister or private office, sources say It appears the PM and No10 were unaware of how these rules were perceived by Robbins and FCDO, and think he should have told them. Allies of Robbins think it is unfair he was sacked But crucially it appears right now that Robbins did not tell No10 and they were actually in the dark about all this until Tuesday. What an unbelievable mess.
If this is what has happened and it does accord with the evidence given to the FAC then it was unfair to dismiss Robbins as he has done nothing wrong.
The issue seems to be with No 10 who don't seem to understand how the system works ... and how it doesn't work when the person under scrutiny is someone with Mandelson's known history who was nevertheless considered the right person for the job (something even Starmer's most fervent critics agreed with at the time).
What we still don't know and probably never will is is what Mandelson failed vetting on and whether it was something that would not have compromised his role in the USA.
One issue that concerns me is why No 10 seems aware of the FAC proceedings in November or how the CRAG Act works.
Underlying all of this is the constant and repeated media frenzy over new stories which seem to force politicans into making rushed stattements and rash decisions.