Indonesia will openly express its opposition to China's vast claims in the South China Sea when Southeast Asian senior officials, ministers and leaders gather over the coming days in Kuala Lumpur for a series of annual meetings, stressing that China's "nine-dash lines" map has no legal basis, a government source said Friday.
The area contained in the lines, which covers most of the South China Sea, overlaps with the exclusive economic zone around Indonesia's Natuna Islands.
Indonesia protested against China's map when it was submitted to the United Nations in May 2009.