Shooting the messenger...
Or, if that's unpalatable, having him charged by the Swedish authorities with sexual assault
Setting aside for the moment of whether Julian Assange is a sexual predator or simply an ordinary  narcissist, the real question to my mind is whether he's done more good than harm. The idea that the information he published (both the military stuff and the diplomatic stuff) was really "secret" before he published it is pretty laughable. Anything that a PFC can get properly access to is definitely not secret.From an intelligence perspective, what we've learned is that the US Military is horribly bad at operational security. If Assange published the names of intelligence sources then the fault lies with the idiots who sent in reports explicitly naming their intelligence sources. No self-respecting intelligence organization would do such a thing habitually, and if someone in the field inadvertently blurted one out it would be the exception not the rule and handled accordingly.
From a journalism perspective we've had the fact that the gap between international relations as they are generally reported and as they actually are is often enormous. But we've known that all along if we were paying attention. Certainly, it comes as news to me that Saudi Arabia is even more aggressive towards Iran than we are, but while it may come as news, it does not come as a surprise. I don't think that Iran's leadership was exactly floored by the revelation.