The Association of Southeast Asian Nations (ASEAN) is a regional association composed of the ten countries comprising Southeast Asia—Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar (Burma), Philippines, Singapore, Thailand, and Vietnam. Situated in a region covering an area of 4.46 million km² (equivalent to approximately 3% of the total land area of the earth), these countries are home to a burgeoning population of 600 million people, which is nearly 9% of the world’s population. As a single economic block, its combined nominal GDP of USD 2 trillion ranks ninth in the world.