I can't even begin to comprehend a country whose citizens don't want the dirt on their government. There is exponentially less incentive to lie to citizens of other countries than your own.
I feel I've been pretty consistent about this as opposed to being partisan; I had a minor spat with Assange over his choices about his approach to editorial framing back when WL was first revealing helicopter footage from Iraq. Wl is a new kind of publishing outlet, but no more neutral or disinterested than the more traditional kind.
Regardless, there is a non-zero chance that the result of unknown secrets being exposed could be anarchy instead of a better-functioning democracy.
Remember this is 2016, not 1916. Revelation and escalation don't lead to a mere slaughter of soldiers, but potentially destruction of civilization as we know it.