BEIRUT, May 9, 2018 (Reuters) - The Syrian Observatory for Human Rights said on Wednesday an Israeli attack on Iranian military facilities south of Damascus had killed at least 15 people, including eight Iranians. The reports of an Israeli attack in the Kisweh area late on Tuesday followed US President Donald Trump's announcement that he was pulling out of the Iranian nuclear deal. "The number increased to at least 15, including at least eight Iranians, killed by the missile strikes," the British-based Observatory reported. Missile strikes overnight in central Syria killed at least 26 pro-regime fighters, most of them Iranians