Israeli brass casts doubt on blaming shelling on Hezbollah

By Dan WilliamsJERUSALEM (Reuters) - Israeli military officials were quoted on Monday rowing back from an assertion by the defense minister that Hezbollah was behind a spate of shelling from Syria, which could increase tension on Israel's northern frontier.The government of Prime Minister Benjamin Netanyahu has been warning that Israel, which has largely stayed out of the six-year-old Syrian civil war, could step up attacks in retaliation for shelling across the frontier, or to block Damascus's