At 9 p.m., shops, restaurants and cafes go dark across the city of Cairo, where a stringent curfew has been imposed to mitigate the energy shock triggered by the conflict in the Gulf. The measure may prove difficult to enforce among people accustomed to long, convivial evenings, but the outlook is f ar from reassuring. Reports from inland areas indicate that petrol stations are running dry, raising fears that the emergency will last longer than expected. ...read more read less