It's no overstatement to describe the region encompassed by ASEAN as one of the world's most complex and diverse.
Its ten nations-Malaysia, Singapore, Thailand, the Philippines, Indonesia, Brunei, Vietnam, Cambodia, Laos, and Myanmar-are truly very different from one another.
In economic terms, they range from Singapore, which has the world's 19th highest per capita income at US$38,000, to Myanmar, whose impoverished residents eke out a living on an average of about US$400 a year.
There is also a wide range of political systems-from communist states to constitutional monarchies to democratic republics. They include some of the cleanest governments in the world and some of the most corrupt.
The differences extend to ethnic character. The people of Vietnam boldly fought wars against the mighty United States and China. Recently, Vietnam has purchased six submarines to help back its claims of sovereignty in the South China Sea. There is a strong flavor of competition to its relationship with China. Meanwhile, the flexible people of Thailand have long taken the approach: "If you can't beat them, shake their hands." Thailand thus avoided its neighbors' fates of being colonized by Western powers and then occupied by Japan during World War II. And ever since Vietnam became a communist state in 1975, Thailand has kowtowed to the supremacy of mainland China.
With a combined population of 570 million and an area of 4.5 million square kilometers, with vast differences in terms of economic development, culture and religion, how are the nations of ASEAN supposed to accomplish integration?
Interestingly, ASEAN originated from a desire to create a bulwark against communist China.
In order to prevent the spread of communism and strengthen economic cooperation, Malaysia, Singapore, Thailand, the Philippines and Indonesia formed the Association of Southeast Asian Nations in 1967. Brunei joined in the 1980s. After the Cold War wound down in the early 1990s, the four nations that comprise ASEAN's "economic B team"-Vietnam, Laos, Myanmar, Cambodia-joined between 1995 and 1999.