The Turks have forfeited their role as an impartial mediator. Their petulant outbursts and continued sniping have shown that they are not impartial and are hostile to the state of Israel. They no longer serve any useful purpose in potential peace talks.
19-year-old construction worker seriously injured after falling from scaffolding in Harish (Haaretz)
from the article: Lieberman: After all the insults, Turkey can't mediate Syria talks