wikileaks leaks tend to be "true" as they are not second hand gossip but actual documents stolen by people who claim to have our best interests at heart but are actually malign.
The CIA etc will have been using TVs, phones, ets as bugging devices: who know, possibly against IS operatives or suspects. The fact that this material has come out makes the job of targetting these people all the more difficult. The Germans, at least, believe wikileaks is controlled by Russian FIS: who is to say they are wrong?
So fundamentally it is highly possible that the Russians are actively thwarting the fight against IS. That ought to be food for thought for President Trump ...