Location, location, location!<p>First, Dubai is geographically perfectly positioned to be an airline hub between Europe, much of Asia (particularly India), Africa and Australia, which is why Dubai is the world&#x27;s biggest airport for international flights and Emirates is well on its way to being the world&#x27;s biggest airline.<p>Second, Dubai is right next to Iran, which is a large, moderately wealthy country blocked off from a large chunk of the world by sanctions.  Guess where a huge part of Iran&#x27;s legal and less legal trade goes through?  Dubai.