Iran, Russia and Turkey say they will jointly enforce a fragile three-week cessation of hostilities in Syria. *The announcement came two days after the peace talks in the Kazakh capital, Astana. In a joint statement, the three countries said there was no military solution to the Syrian conflict. *It was still not clear whether the Syrian government or the opposition backed the communique. Earlier, a rebel spokesman said "no agreements" would be signed. *More than 300,000 people have been killed and 11 million others displaced since the so called uprising against President Bashar al-Assad began in March 2011. *The "trilateral mechanism" was agreed between Russia and Iran, which back Mr Assad's government, and Turkey(NATO) , which supports the opposition. The two main players in the matter. *It would " observe and ensure full compliance with the ceasefire, prevent any provocation and determine all modalities" , the statemen...