This week has seen Israel and Hezbollah step closer to all-out war. Air strikes across Lebanon on Monday killed more than 500 people – the deadliest day in the country since the civil war more than three decades ago. Hezbollah struck deeper into Israeli territory. Then the chief of the IDF told Israeli soldiers to prepare for the possible entry of ground troops into southern Lebanon. Unified calls came for a 21-day ceasefire from the UN and Western allies, but the rhetoric of the Israeli PM suggests anything but peace.