but he also recognises Raab's intelligence and diligence.
I'm sorry, Grantnow, but what intelligence and diligence? I very much got the impression that Tolley was taking Raab on his own estimation. His actual record as a minister doesn't demonstrate much of either quality. This is the man who didn't realise the importance of Dover to our trade with Europe and the man who completely failed to plan for a timely and orderly evacuation of Afghan civilians from Afghanistan, despite having ample warning that it would be needed.
He was a very bad minister and should have gone after the Afghan debacle, if not before.
but I am left with unanswered questions about senior officials' resilience, whether government policy was subverted in one case by an official and how reasonable it is for a Minister to be angry with officials given the potential consequences of their shortcomings.
Ministers have been moaning about the 'obstreperousness' of civil servants for decades. Raab's whining is both unfair, because the civil servant in question has no way of responding, and petulant. We know nothing about the case in question.
I can appreciate that ministers might be angry with officials, but bullying is no way to deal with it. It's not right in any workplace.
I would suggest that you read the book I refer to on the other Raab thread. The whole of the Westminster machinery is deeply flawed and dysfunctional. It is horrendous, even terrifying, that we trust such a creaking, shambolic and dysfunctional institution to govern us wisely... Much of it is not the fault of individuals, but of the system they have to work with.