Secretary of State John Kerry urged NATO to prepare for the possible use of chemical weapons by Syria. This came on Tuesday, the same day that a senior Israeli military intelligence official said Syrian President Bashar Al-Assad had used such weapons last month in his battle against insurgents. It was the first time Israel had accused the embattled Syrian leader of using his stockpile of nonconventional weapons. The assessment was based on visual evidence, could raise pressure on the U.S. and other Western countries to intervene in Syria. Britain and France recently announced that they had evidence that Assad’s government had used chemical weapons.