Vehicles drive along a highway in Dubai. With war raging in the Gulf, Dubai’s status as a safe city is now under threat.—Reuters • UAE airspace partially closed; commercial flights limited• Wealthy residents paying up to $200,000 for private evacuation flights DUBAI: Dubai’s super-rich have started fleeing the glitzy business hub by any means necessary, paying hundreds of thousands of dollars to escape a regional war they fear has no end in sight. The desert city in the United Arab Emirates...