Hmmm its a tough one but id say that when there is classified information involved, we just have to respect that freedom of information is just not always feasible. This is information about discussions from 270+ embassies from 1966 to 2010 - thats a mass of information!
I mean until all of the info is released and we know the true extent of what has been discussed/reported etc we can only guess the impact that any revelations will have but worst case scenario (which imo is probably likely!), the information collated within such documents could not only jeopardise relations between countries but could absolutely jeopardise public safety. In reality there are 'secrets' that 'we' as the public
should be privy too, being that those in power should not be pulling any dodgy stunts or 'lying' in any way anyway so I mean why would they be bothered about this leaking when they have or should have nothing to hide, right?... Ideally yeah, but thats just too naive and not how the world works.
This is only going to put pressure on already strained relationships. There is already so much conflict going on in the world, I see no need to dredge up more and for what reason? With what aim? It can achieve no good imo.
It could quite easily be classed as terrorism. Under the Terrorism act of 2000 (in UK) this could be classed as action which could
'create a serious risk to the health or safety of the public or a section of the public' .
I have a sick baby to tend to tonight, hence why im still up so will get back to this but wanted to throw my two pence in anyway