Israel l Syria repeatedly used chemical weapons'

Syrian government forces  have used chemical weapons , possibly nerve gas - in his fight  against rebels trying to overthrow President Bashar-al-Assad said on Tuesday the main intelligence alist  Israel. Brigadier General Itai Brun made ​​the remarks at a security conference in Tel Aviv a day after the Secretary of Defense of the  United States, Chuck Hagel, said on a visit to Israel that the intelligence agencies of the country were still evaluating whether were used such weapons. "To our knowledge, there was use of lethal chemical weapons. Which CW? probably sarin " , said Brun in Israel's strongest statement on the subject to date. Photos victims foaming at the mouth and constricted pupils  were indications that he had used a deadly gas, he said. Forces loyal to Assad were behind the attacks "(rebel) armed on a number of occasions in recent months, including most incident reported on March 19, "said Brun. For his part, Secretary of State, John Kerry, said that NATO should consider their role in the crisis in Syria, including how to respond to the potential threat of chemical weapons. "We continue to consider the role of NATO in regard to the Syrian crisis," said Kerry for ameeting of foreign ministers of the Organization North Atlantic Treaty in Brussels, adding that the military alliance plans and are suitable designed. "We should also, collectively and carefully consider how NATO is prepared to respond by protecting members against Syrian threat, including any potential threat of chemical weapons, "he said. The U.S. president, Barack Obama, has described the use of chemical weapons as"red line" for his country, which would trigger a specified action. The Syrian government and the rebels last month accused each other of launching a chemical attack near the city of Aleppo in the north. On Monday, Hagel said the use of chemical weapons by Assad's forces would be a "turning point", and the U.S. and Israel "have options for all contingencies." Hagel met with Prime Minister Benjamin  Netanyahu in Jerusalem on Tuesday, a day after a helicopter flying over the Israeli military occupied Golan Heights border fighting in Syria, which has entered its third year. "It is a difficult and dangerous, is a time when  friends and allies must stay close , closer than ever, "  said Hagel, speaking to reporters before talking  with Netanyahu over the United States and Israel. The discus ions between Syria and the United Nations for a UN investigation into the possible use of chemical weapons have been stalled due to the Syrian government's refusal to let the inspectors visit other places besides Aleppo, said last week diplomats and officials UN.