"They attacked the source"? I had to go look for what you were talking about, I guess it's this:

http://www.aljazeera.com/programmes/listeningpost/2016/04/qa...

I don't see Assange attacking any sources in that Q&A. He does criticise (not attack) the way some journalists handled it, saying they put their own spin on things and that there should have been a bulk release. Otherwise, he argues, the impact would be low. That seems like a reasonable opinion to hold.

2. I looked at their IP addresses. They appear to have three datacenters, at least being advertised to me, one in Russia, one in the Netherlands and one in Norway. From a political perspective having servers in a place unfriendly to America, given how many of their leaks are about the US establishment, seems pretty sensible to me. But saying they are "hosted out of Russia" is extremely misleading, a lie of omission.

3. How are they "actively taking sides in political battles"? They leak what they get. If they didn't, leakers would go elsewhere to get their info out, it's not like Wikileaks has a monopoly on leaking. This is just slander and smearing.