The just powers of government derive from the consent of the governed, wikileaks provides information on what the government is doing so the people may judge whether it is just.
Soon enough, Assange must confront the paradox of his creation: the thing that he seems to detest most—power without accountability—is encoded in the site’s DNA, and will only become more pronounced as WikiLeaks evolves into a real institution.
(http://www.newyorker.com/reporting/2010/06/07/100607fa_fact_...)
Let's also think about this leak from the perspective of the Afghans and Pakistanis who risk their lives to work with the United States. If we cannot be trusted to protect their identities, then we will end up with far fewer local partners.
I find it insane that it is criminal to share some of this information. Secret information that the government has should be very very little, especially in war efforts. Sure the CURRENT strategy being applied in the battlefield should be secret since that will save our soldiers' lives, but after the battle that should all be revealed.
Hiding information makes the american public hated for certain actions, and the american public does not know what the actions were to begin with, so in the end the american public loses.