(From lefy) Malaysian Prime Minister Mahathir Mohamad, Myanmar leader Aung San Suu Kyi, Philippines Foreign Affairs Assistant Secretary for ASEAN Affairs Junever Mahilum-West, Singapore's Prime Minister Lee Hsien Loong, Japanese Prime Minister Shinzo Abe, Chinese Premier Li Keqiang, Thailand Prime Minister Prayuth Chan-ocha, South Korean President Moon Jae-in, Vietnam Prime Minister Nguyen Xuan Phuc, Brunei Sultan Hassanal Bolkiah, Cambodia Prime Minister Hun Sen, Indonesia President Joko Widodo and Laos Prime Minister Thongloun Sisoulith pose for a group photo at the Association of Southeast Asian Nations (Asean) Plus Three summit in Nonthaburi, Thailand, Monday, Nov. 4, 2019. (AP Photo/Aijaz Rahi)
Monday's sparsely attended address from O'Brien stood in contrast to earlier Asean meetings, which had all been attended by most heads of state.