Columbia subject headings:
Security, International.
Trade routes--Asia.
Trade routes--Pacific Area.
Harvard subject headings:
Trade routes--Asia
Trade routes--Asia--Strategic aspects.
Trade routes--Pacific Area--Strategic aspects.
Trade routes--Pacific Area.
Trade routes--Security measures--Asia.
Trade routes--Security measures--Pacific Area.
Princeton subject headings:
Security, International.
Trade routes--Asia.
Trade routes--Pacific Area.