one people have been killed across Syria on June 4 , an opposition group says . Syria 's prime minister says it is considering plans for a buffer zone in northern Syria . Helicopter gunships flew over Damascus and Turkey , opposition activists say . Asked Thursday if Ankara was considering establishing safe zones in northern Syria to counter any threat to Turkey 's security from the Kurdistan Workers ' Party , or PKK , Prime Minister Recep Tayyip Erdogan was noncommittal but `` They must stop fighting and killing people now , '' U.N. secretary-general says .
one people have been killed across Syria on June 4 , an opposition group says . Syria 's prime minister says it is considering plans for a buffer zone in northern Syria . Helicopter gunships flew over Damascus and Turkey , opposition activists say . `` They must stop fighting and killing people now , '' U.N. secretary-general says .