Starmer, McSweeney and Mandeson
My thinking, for what it is worth as I have no inside track, is that many people thought appointing Mandelson was very clever, that includes Kemi Bandenoch and Nigel Farage. Mandelson was just the slightly sleazy character with links to Trump who might be good at keeping in with Trump.
Almost certainly not true but it is not clear quite how nasty and vicious Trump is.
It is also true that Mandelson had been caught out in dodgy activities in the past but nothing suggested that he would sell government secrets to outsiders. Many politicians are influenced by friends and large donors but most do not sell secrets, they just make appropriate decisions.
Another important figure is Morgan McSweeney who was Starmer's chief of staff when he became PM but was also crucial to Starmer becoming leader of the Labour party. He his a protogee of Mandelson, definitely on the right of the Labour party . He help set up a faction within the Labour Party called Labour Together which campaigned against Jeremy Corbyn. It might be that McSweeney identified Starmer as the person to take on Corbyn and made himself an essential part of Starmer's team.
The problem is that Starmer is not a natural politician and does not come across as a man of the people. He is very much the lawyer who argues his cases very carefully. There is a feeling that his knighthood makes him more of a toff. He got it for being head of the DPP, and goes with the job. It might be his difficulty with the civil service goes back to having been head of a big government service and possibly being used to his orders just being obeyed and trusting those below him just to getting on with things. Perhaps he trusted McSweeney too much, others assumed that when he spoke it was always with the support of the PM but he might not have been consulted, not clear how much McSweeney always cleared with Starmer.
The other issue appears to be the claim that the Foreign Office does not have to worry about vetting of their staff. There might be some truth especially if they were using double agents in some of their posting:)
It could be messy but I think it unlikely that Starmer was aware of all that was going on, and jst assumed that things would happen. Starmer does not appaer to make friends abd be very clubable. Once this may not have mattered but with television and modern media polticians are much more exposed as people. It is not competence does not a valuable talent anymore but Starmer seems to have shown both a level

![Leading Zionists [pic: M'cr Jewish Museum]](https://www.bbc.co.uk/staticarchive/eb22199dd71306d6fb7286a4d54d591fb271eed5.jpg)