Residents of the 10 ASEAN countries will need to use English more common. In addition to the national language or the national language of the indigenous community. Not only government officials, only to have to come to a meeting to discuss and communicate. And not only do business, and international trade, only to have to use English to communicate between themselves and the business.
But when all the people in the region are the citizens of ASEAN with everyone. And everyone will be calling. Traveling. Make familiar with each other. Learn from each other. And most importantly, everyone will have to travel across the border to find work and to seek a better life. So English is the number one tool for ASEAN citizens. Communication in a relationship to the world of the region. World wide boundless hospitality. The competitive world of geographic and cultural borders.
English is the second language of the region. Juxtaposing one language as the national language of each people.