Defenders of the State on this issue tend to answer the question they want to be asked - "should the state have secrets".

No-one (except maybe Julian Assange) is arguing that the State shouldn't have secrets - the recent leaks occurred not as a blow against secrecy but to expose State wrongdoing. That's why it's whistleblowing, and not just vandalism.

Guys like Blair like to pretend that they're fighting for the government's right to keep secrets, which no-one is seriously challenging; they run shy of addressing the specific secrets exposed - be it military misbehaviour against civilians, civil servants deceiving lawmakers and so on.