I admitted nothing. IS was already fighting against Assad before that.
Proof: Battle of Mennegh Air base which IS also brags about regularly, included in their video called 'Flames of War'. Back then, they were 'brothers' with AlNusra and rebels, but just like drug cartels, they started fighting each other for land and money. So what you said is a lie, which is common among Nusra/IS sympathizers, not to forget Israeli regime propagandists.
I just refuted the huge hoax that 'rebels are fighting IS' which is BS. That's it.