This expansion added jetways, a duty-free zone, hotel, and greater parking.
The Clinton administration's position is that the Internet should be a federal duty-free zone.
Since the tribal areas are, in effect, duty-free zones where the national customs service has no access, they have always been a smuggler's paradise.
But when the economy opened up to world trade in the early 1990's, the duty-free zone closed and people started to leave.
The city also has a duty-free zone since 1987.
It controls a business empire including a bank, the duty-free zones at the border and most of Syria's cellphone service.
This expansion added a new control tower, jetways, a duty-free zone, hotel, and greater parking area.
Langkawi has been allotted as a duty-free zone within the country.
Still further north are the duty-free zone and an airstrip.
The question remains concerning the stage at which the duty-free zones must be abolished.