THE Gulf states have been on the radar of the world’s airlines since the 1930s. Then Dubai, a pearl-fishing port, served as a stopover for the flying boats of Imperial Airways (a forerunner of BA) on routes connecting London to distant colonial outposts. BA still serves Dubai but most of the tail fins at its vast main airport, which recently overtook London’s Heathrow as the world’s busiest for international traffic, carry the logo of Emirates, the small state’s own network airline.