ANKARA (Reuters) - President Tayyip Erdogan said on Sunday Turkey was implementing a deal agreed with Russia and Iran to reduce violence in Syria s northern province of Idlib, in cooperation with Free Syrian Army rebel fighters.  Now we are applying the Astana decisions in Idlib,  Erdogan said, referring to an agreement announced last month in the Kazakhstan capital. He said if Turkey had not acted  bombs would fall on our cities .  Our efforts in Idlib are going on, in cooperation with the Free Syria Army, without problems at the moment,  he told members of his ruling AK Party at a meeting in the western Turkish province of Afyon.   