Association of Southeast Asian Nations (ASEAN): ASEAN is a regional organization consisting of ten member countries in Southeast Asia. Its members include Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam. ASEAN aims to promote regional peace, stability, economic growth, and cooperation among its members.

South Asian Association for Regional Cooperation (SAARC): SAARC is an organization comprising eight member countries in South Asia. The member countries are Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka. SAARC promotes regional cooperation in various areas such as economics, trade, culture, and social development.

Central Asian Regional Economic Cooperation (CAREC): CAREC is a partnership of eleven member countries in Central Asia and neighboring regions. The participating countries include Afghanistan, Azerbaijan, China, Georgia, Kazakhstan, Kyrgyzstan, Mongolia, Pakistan, Tajikistan, Turkmenistan, and Uzbekistan. CAREC focuses on promoting economic cooperation and development through various initiatives such as infrastructure projects, trade facilitation, and policy dialogue.

East Asia Summit (EAS): The EAS is a forum consisting of eighteen member countries in the Asia-Pacific region. The member countries include the ten ASEAN countries plus Australia, China, India, Japan, New Zealand, South Korea, Russia, and the United States. The EAS provides a platform for dialogue and cooperation on various political, security, and economic issues among its members.

These multi-country organizations play significant roles in promoting regional cooperation, economic integration, and addressing common challenges in the Asian region. They facilitate dialogue, foster partnerships, and work towards enhancing peace, stability, and development in their respective areas of focus.