A drone forced Dubai International Airport, one of the world's busiest, to halt air traffic for an hour and a half Saturday evening. It is the third such incident in less than five months. <br/><br/>Operator Dubai Airports said, air space around the airport was closed from 7.25 pm to 8.49 pm due to unauthorised drone activity resulting in flight diversions. <br/><br/>Dubai Airports stressed in a tweet that safety is its top priority and reminded drone operators that it is forbidden to fly them within five kilometres of any airport.