My God, I understand why @smh_23 was so exasperated around here.
Let's see - why would a person who regularly espoused virulent anti-American beliefs, among other things claiming that the "United States of America are the greatest threat to world security and peace", who was paid exorbitant sums by the Russian government to host a political TV show on Russian state TV, who was a regular on the Russian political media circuit and holds regular meetings with top Russian officials, why would he of all people lie about Russian involvement in Wikileaks?
That Assange works for Moscow is old news in Moscow - here's Nadya Tolokno's direct experience with Assange:
He couldn’t deny it. On the next day after I visited the Ecuadorian Embassy, the head of Russia’s biggest propaganda network, Russia Today, the editor-in-chief came to him and they had a project together. He often works with the Russia propaganda machine, and doesn’t try to hide it. Julian Assange doesn’t try to hide that fact because he hosts at the Ecuadorian Embassy the editor-in-chief of the Russian propaganda team, Russia Today, and has projects with them. Russia Today has nothing to do with truth. They get tons of government money, so instead of that money going to healthcare or education, it serves these propaganda goals—which is disturbing for a lot of Russians because they’re undergoing a huge economic crisis. But Julian Assange, he openly works with [Russia]. It’s not a secret. He’s connected with the Russian government, and I feel that he’s proud of it. And with Julian Assange, I really like a lot of the things that he’s done, too.