ASEAN maintains a global network of alliances, dialogue partners and diplomatic missions, and is involved in numerous international affairs. The organisation maintains good relationships on an international scale, particularly towards Asia-Pacific nations, and upholds itself as a neutral party in politics. It holds
ASEAN Summits, where
heads of government of each member states meet to discuss and resolve regional issues, as well as to conduct other meetings with countries outside the bloc to promote external relations and deal with international affairs. The first summit was held in
Bali in 1976. The third summit was in
Manila in 1987, and during this meeting, it was decided that the leaders would meet every five years. The fourth meeting was held in
Singapore in 1992 where the leaders decided to meet more frequently, every three years. in
Kuala Lumpur, Malaysia, on 26 May 2025. ASEAN is a major partner of the
Shanghai Cooperation Organisation, developing cooperation model with the organisation in the field of security, economy, finance, tourism, culture, environmental protection, development and sustainability. Additionally, the grouping has been closely aligned with
China, cooperating across numerous areas, including economy, security, education, culture, technology, agriculture, human resource, society, development, investment, energy, transport, public health, tourism, media, environment, and sustainability. It is also the linchpin in the foreign policy of Australia and New Zealand, with the three sides being integrated into an essential alliance. ASEAN also participates in the
East Asia Summit (EAS), a pan-Asian forum held annually by the leaders of eighteen countries in the
East Asian region, with ASEAN in a leadership position. Initially, membership included all member states of ASEAN plus China, Japan, South Korea, India, Australia, and New Zealand, but was expanded to include the United States and Russia at the Sixth EAS in 2011, as they were also important players having dominance and influence over the region. The first summit was held in
Kuala Lumpur on 14 December 2005, and subsequent meetings have been held after the annual ASEAN Leaders' Meeting. The summit has discussed issues including trade,
energy, and security and the summit has a role in
regional community building. Other meetings include the ASEAN Ministerial Meeting that focus mostly on specific topics, such as defence or the environment, and are attended by
ministers. The (ARF), which met for the first time in 1994, fosters dialogue and consultation, and to promote confidence-building and preventive diplomacy in the region. As of July 2007, it consists of twenty-seven participants that include all ASEAN member states, Australia, Bangladesh, Canada, China, the EU, India, Japan, North and South Korea, Mongolia, New Zealand, Pakistan, Papua New Guinea, Russia, Timor-Leste, the United States, and Sri Lanka. Taiwan has been excluded since the establishment of the ARF, and issues regarding the Taiwan Strait are neither discussed at ARF meetings nor stated in the ARF Chairman's Statements. ASEAN also holds meetings with Europe during the
Asia–Europe Meeting (ASEM), an informal dialogue process initiated in 1996 with the intention of strengthening co-operation between the countries of Europe and Asia, especially members of the
European Union and ASEAN in particular. ASEAN, represented by its secretariat, is one of the forty-five ASEM partners. It also appoints a representative to sit on the governing board of
Asia-Europe Foundation (ASEF), a socio-cultural organisation associated with the meeting. Annual bilateral meetings between ASEAN and India, Russia and the United States are also held. Prior to 2012, ASEAN foreign ministerial statements were not typically contentious. Beyond the
Russo-Ukrainian war, the
Iran war has also influenced regional alignments. According to the
ISEAS-Yusof Ishak Institute's State of Southeast Asia 2026 survey, published in April 2026, 52% of Southeast Asian respondents favored alignment with China over the United States amid the Iran war, compared to 48% who still preferred the US. The survey showed particularly strong preferences for China in Indonesia (80%), Malaysia (68%), and Singapore (66%), while only 23% of Filipino respondents favored China.
Territorial disputes South China Sea With perceptions that there have been
multiple incursions into the
South China Sea by the PRC (China) and ROC (Taiwan), with land, islands and resources all having had previous overlapping claims between
Vietnam,
Philippines,
Malaysia,
Brunei,
Indonesia, and various other countries, the PRC and ROC's claim into the region is seen as intrusive by many Southeast Asian countries as of 2022, potentially a reflection of the threat of
Chinese expansionism into the region. Shortly after the conclusion of the
South China Sea Arbitration, at the 24 July 2016 China-ASEAN Foreign Ministers summit, China assured ASEAN that it would not conduct
land reclamation on the Scarborough Shoal. The joint statement at the conclusion of the summit emphasised the implementation of the Declaration on the Conduct of Parties in the South China Sea and urged the parties to refrain from inhabiting currently unoccupied islands, reefs, shoals, cays, and other features.
Bilateral There have been
territorial disputes between ASEAN member states such as the
Cambodian–Thai border dispute between Cambodia and Thailand,
Cambodian–Vietnamese border dispute between Cambodia and Vietnam, and the
North Borneo dispute between the Philippines and Malaysia. The
Vietnamese invasion of Cambodia in 1978, backed by the Soviet Union, was not accepted by ASEAN. They rejected it as a violation of the principles of regional integration. ASEAN cooperated with US and Australia to oppose Vietnam's move and it sponsored a Cambodian resolution in the United Nations General Assembly. ASEAN played a major role starting in 1980 in the peace process, leading to the 1991 Paris Agreement.
Relations with other blocs ASEAN Plus Three In 1990, Malaysia proposed the creation of an
East Asia Economic Caucus composed of the members of ASEAN, China, Japan, and South Korea. It intended to counterbalance the growing US influence in
Asia-Pacific Economic Cooperation (APEC) and Asia as a whole. However, the proposal failed because of strong opposition from the US and Japan. Work for further integration continued, and the ASEAN Plus Three, consisting of ASEAN, China, Japan, and South Korea, was created in 1997. ASEAN Plus Three ASEAN Plus Three is the latest development of Southeast Asia-East Asia regional co-operation. In the past, proposals, such as South Korea's call for an Asian Common Market in 1970 and Japan's 1988 suggestion for an Asian Network, have been made to bring closer regional co-operation. The first leaders' meetings were held in 1996, and 1997 to deal with
Asia–Europe Meeting issues, and China and Japan each wanted regular summit meetings with ASEAN members afterwards. The group's significance and importance were strengthened by the
1997 Asian financial crisis. In response to the crisis, ASEAN closely cooperated with China, South Korea, and Japan. Since the implementation of the Joint Statement on East Asia Cooperation in 1999 at the Manila Summit, ASEAN Plus Three finance ministers have been holding periodic consultations. ASEAN Plus Three, in establishing the
Chiang Mai Initiative, has been credited as forming the basis for financial stability in Asia, the lack of such stability having contributed to the
1997 Asian financial crisis. , Thailand, on Oct. 24, 2009 Since the process began in 1997, ASEAN Plus Three has also focused on subjects other than finance such as the areas of food and energy security, financial co-operation, trade facilitation, disaster management, people-to-people contacts, narrowing the development gap, rural development, poverty alleviation, human trafficking, labour movement, communicable diseases, environment and sustainable development, and
transnational crime, including counter-terrorism. With the aim of further strengthening the nations' co-operation, East Asia Vision Group (EAVG) II was established at the 13th ASEAN Plus Three Summit on 29 October 2010 in
Hanoi to stock-take, review, and identify the future direction of the co-operation. The ASEAN Plus Three framework also serves as a platform for the ASEAN affiliated intergovernmental organisations in China, Korea, and Japan to meet and cooperate. The
ASEAN-China Centre, the
ASEAN-Japan Centre, and
ASEAN-Korea Centre currently convene annually to discuss ongoing projects and to discuss possible areas of cooperation vis-a-vis ASEAN.
ASEAN Plus Six , Philippines on November 14, 2017 ASEAN Plus Three was the first of attempts for further integration to improve existing ties of Southeast Asia with
East Asian countries of China, Japan and South Korea. This was followed by the even larger
East Asia Summit (EAS), which included ASEAN Plus Three as well as India, Australia, and New Zealand. This group acted as a prerequisite for the planned
East Asia Community which was supposedly patterned after the
European Community (now transformed into the
European Union). The
ASEAN Eminent Persons Group was created to study this policy's possible successes and failures. The group became ASEAN Plus Six with Australia, New Zealand, and India, and stands as the linchpin of the
Asia–Pacific's economic, political, security, socio-cultural architecture, as well as the global economy. Codification of the relations between these countries has seen progress through the development of the
Regional Comprehensive Economic Partnership, a free-trade agreement involving the 15 countries of ASEAN Plus Six (excluding India). RCEP would, in part, allow the members to protect local sectors and give more time to comply with the aim for developed country members.
India temporarily does not join the RCEP for the protection of its own market, but Japan, China, and ASEAN welcomes India's participation.
Taiwan has been excluded from participating with the organisation owing to China's influence on the
Asia–Pacific through its economic and diplomatic influence. ==Environment==