I generally think so too. It's also more likely to impose responsibility in such cloaked goings-on, as the actions may be revealed later. If what they were doing was justified at the time, it's not much of a problem; if it wasn't, they have it coming.
Secrecy has uses, but perpetual secrecy seems useful only to hide what you should be punished for.
> It's also more likely to impose responsibility in such cloaked goings-on, as the actions may be revealed later.
Call me a cynic, but I think that what will happen in the short term is that people (US diplomats in this case) will continue to behave in the exact same way, only now they won't trust the diplomatic 'cable' system to communicate and will temporarily revert to more old school practices (person to person or encrypted voice communications).
I'm not sure that's even likely. I think business and the cable system continue as always. The leak only occurred, from what we know, due to the actions of Manning. That's one person, out of the estimated 3 Million who have access to Secret classified cables. The punishment pursued against him, and the screening FSOs go through, make future leaks, I think not so certain.
Secrecy has uses, but perpetual secrecy seems useful only to hide what you should be punished for.