Today Indonesia is the country with the largest population in Southeast Asia, and is also the location of the headquarters and the ASEAN Secretariat as well.
Today, Indonesia is the most populous country in Southeast Asia and is also the location of the head office and the Office of the Secretary General of ASEAN.
This is a country at present, Indonesia, with a population of most countries in Southeast Asia and the most important is also home to the headquarters and the Office of the Secretary General of ASEAN countries.