Even as Israel and Hamas agreed to a four-day ceasefire deal in the war on Gaza,?Israel's national security adviser said in a late-night announcement that the deal would not take effect before Friday, a day later than originally expected.?The deal comes at a time when the devastating war on Gaza stretched over into its sixth week, killing over 11,000 Palestinians,?two-thirds of them women and minors, according to Gaza's Health Ministry.?