For Mohammed Kabrah, the owner of a small café in Jaffa, every air raid siren brings the same sinking feeling. The customers disappear. The streets empty. The cash register stops ringing. "Business has gone down 70 to 80 per cent since October 7," said the 47-year-old father of two. "Once the sirens start, the place is empty. Many people don't even leave home." Like many Israelis, Mr Kabrah has lived through years of conflict. But he believes the war with Iran has changed something fundamental.