About 1,500 gas stations in France have run dry or are about to close as fuel supplies are hit by strikes over government pension reforms, officials say. A blockade of oil refineries is into its seventh day and the body that supplies most supermarkets says one in four petrol stations is affected. President Nicolas Sarkozy has called a crisis cabinet to protect supplies. Oil company Exxon Mobil has described the situation as �critical�. Anita Elash reports.