Earlier quoted context omitted.
Editors/publishers exercise judgement and take responsibility for what they put out into the world. AFAICT, Assange's best argument for his innocence is that he bears no responsibility because... he neither took nor accepts any responsibility.
I'm pretty sure it is everyone's responsibility to inform the world about war crimes when that information is brought to our attention.
Scoping to a reasonable level, publishers' primary job is to review and filter information for quality, safety, and fitness for mass consumption. Assange and WikiLeaks explicitly do not do that. At best, they are a distributor.