...Dubai was supposed to be safe. Instead, it has been under attack by Iran since Feb. 28. More than 260 ballistic missiles and over 1,500 drones have been detected over the U.A.E.; most have been intercepted, but their percussive booms have become part of the city’s soundscape. ...The attacks struck at the fundamental premise of Dubai’s model as a new type of global metropolis. It’s developed into what could be called a city as platform — less a rooted place with people and history than a blank slate for the exchange of capital. Its success has even spawned a term,...