India's Multilateral Diplomacy: BRICS, G20 and Regional Groupings

India sits inside several overlapping groupings at once: ones organised by economic weight (BRICS, G20), by geography (BIMSTEC), and by connectivity (INSTC). UPSC treats these as one exam cluster because a question often asks you to tell them apart, which grouping India is currently chairing, which one it merely hosted years ago, and which outcome belongs to which summit. This note pulls the four together.

BRICS: from an acronym to an 11-member bloc

BRIC was first formalised at a Foreign Ministers' meeting on the sidelines of the UN General Assembly in New York in 2006 (Brazil, Russia, India, China); the first leaders' summit followed in Yekaterinburg, Russia, in 2009. South Africa was invited to join in 2010 and attended its first summit (the 3rd, in Sanya) in 2011, turning BRIC into BRICS.

The bloc has expanded sharply since. At the 15th Summit (Johannesburg, 2023), leaders adopted guiding principles for expansion; at the 16th Summit (Kazan, Russia, October 2024), five new full members were confirmed to join from January 2024: Egypt, Ethiopia, Iran, Saudi Arabia, and the UAE. Indonesia became the 11th full member from January 2025. The Kazan summit also created a new "BRICS Partner Country" category; ten countries (Belarus, Bolivia, Cuba, Kazakhstan, Malaysia, Nigeria, Thailand, Uganda, Uzbekistan, Vietnam) took up that status in 2025. This list is very likely to keep growing, so treat "current membership" as a snapshot worth rechecking, not a fixed fact to memorise once. As of this writing, BRICS's 11 full members together account for roughly 49.5% of world population, 40% of global GDP, and 26% of global trade, the scale argument the bloc uses to press for a bigger voice in global governance.

India's 2026 chairship, its fourth after hosting in 2012, 2016, and 2021, began on 1 January 2026, under the theme "Building for Resilience, Innovation, Cooperation and Sustainability." India last hosted BRICS in 2021 (the 13th Summit, New Delhi, held virtually because of the pandemic), where it introduced the Digital Health Summit and the first Water Ministers' Meeting. BRICS cooperation runs across three pillars: political and security, economy and finance, and cultural and people-to-people exchanges.

India's G20 Presidency: the concrete legacy

India held the G20 Presidency from 1 December 2022 to 30 November 2023, culminating in the New Delhi Summit (9-10 September 2023) and the consensus New Delhi Leaders' Declaration (NDLD), adopted by all members despite the Russia-Ukraine war having strained earlier G20 texts.

The single most-tested outcome is the African Union's induction as a permanent G20 member, announced by Prime Minister Modi on the summit's opening day, bringing 55 African nations into the forum and, on India's own account, extending the G20's population coverage to roughly 80% of the world. It was the G20's first membership expansion since the grouping's creation in 1999.

Other outcomes worth holding onto for Prelims: the Global Biofuels Alliance, a call to triple global renewable energy capacity by 2030, the Green Development Pact, a Digital Public Infrastructure Repository (50-plus DPIs from 16 countries, built on India's own Aadhaar, UPI, and DigiLocker experience), two editions of the Voice of Global South Summit, and an estimated $5.9 trillion financing gap developing countries face to meet their Nationally Determined Contributions by 2030. India's own tally: 87 outcomes and 118 adopted documents, more than any prior presidency. India handed the presidency to Brazil on 1 December 2023.

BIMSTEC: the Bay of Bengal grouping

The Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) began in 1997 as BIST-EC (Bangladesh, India, Sri Lanka, Thailand); Myanmar joined the same year, and Bhutan and Nepal joined in 2004, when it was renamed BIMSTEC. Its seven members (Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, Thailand) bridge South and Southeast Asia, a grouping India leans on partly because SAARC has been effectively stalled by Pakistan's presence since 2016.

A BIMSTEC Charter, giving it a proper legal foundation as an organisation for the first time, was adopted at the 5th Summit (Colombo, 2022). The 6th Summit (Bangkok, April 2025) adopted the grouping's first-ever vision document, the "Bangkok Vision 2030" ("A Prosperous, Resilient and Open BIMSTEC by 2030"), and signed an Agreement on Maritime Transport Cooperation. The secretariat sits in Dhaka.

INSTC: the connectivity answer to a blocked land route

The International North-South Transport Corridor (INSTC) is a roughly 7,200 km multi-modal route (ship, rail, road) meant to connect India to Central Asia, Russia, and Europe via Iran, bypassing the land route through Pakistan that India cannot use. It was launched by an agreement signed in St. Petersburg on 12 September 2000 by India, Iran, and Russia; membership has since grown to 13 ratifying countries, adding Azerbaijan, Armenia, Kazakhstan, Kyrgyzstan, Tajikistan, Turkey, Ukraine, Belarus, and Oman. It matters strategically as India's main land-and-sea bridge to Central Asia and Russia that does not depend on Pakistani or Chinese territory, complementing (not replacing) the Chabahar port project in Iran.

The exam angle

Statement questions in this cluster like to swap details across groupings that sound similar: whether BRICS or G20 admitted the African Union (it is G20, at the New Delhi summit, not a BRICS decision); which grouping India is currently chairing versus which one it merely hosted years ago; and BIMSTEC's exact member list versus SAARC's (Pakistan and Afghanistan sit in SAARC, not BIMSTEC). Chronology gets tested directly too: 2000 (INSTC signed) before 2022 (BIMSTEC Charter) before 2023 (G20 New Delhi Summit) before 2024-25 (BRICS expansion) before 2026 (India's BRICS chairship). Keep the year a grouping was founded separate in your head from the year India is currently chairing it, since a question can ask for either.

Quick revision points

• BRICS: founded (as BRIC) 2006, first summit 2009 (Yekaterinburg); now 11 full members (added Egypt, Ethiopia, Iran, Saudi Arabia, UAE from Jan 2024; Indonesia from Jan 2025) plus 10 Partner Countries (from 2025); expect this list to keep growing.
• India's BRICS 2026 chairship: its fourth (after 2012, 2016, 2021), began 1 January 2026, theme "Building for Resilience, Innovation, Cooperation and Sustainability."
• G20 India Presidency: 1 Dec 2022 to 30 Nov 2023; New Delhi Summit 9-10 September 2023; headline outcome, the African Union made a permanent G20 member.
• BIMSTEC: 7 members, founded 1997, Charter adopted 2022 (Colombo), Bangkok Vision 2030 adopted at the 2025 Bangkok summit.
• INSTC: signed 2000 by India, Iran, and Russia; now 13 members; India's Pakistan-bypass corridor to Central Asia, Russia, and Europe.

Current affairs like this rarely map to one textbook. We label it honestly as current affairs rather than forcing a book mapping that isn't real. Once these anchors are clear, the fastest way to lock them in is to practise the statement-based questions UPSC tends to build around exactly this kind of grouping-versus-grouping detail.