JERUSALEM, July 18, 2016 (Xinhua) -- Members of Israeli security forces look for debris of Patriot air defense missiles in the Golan Heights, on July 17, 2016. Israel launched two missiles in a failed attempt to down a Syrian unmanned aerial vehicle (UAV) over the Israeli-held Golan Heights on Sunday, the Israeli army said. (Xinhua/Ayal Margolin/JINI)