01 — Introduction
The Emerging Two-Sphere World
For over three decades following the Cold War, the international system operated under what analysts commonly describe as a unipolar order, with the United States as the predominant global power. That era is now giving way to a different configuration. According to the 2025 Munich Security Report, the world is witnessing a process of “multipolarization”—a structural shift in which multiple centres of power increasingly shape global politics, economics, and security.
While this transformation is complex, many geopolitical analysts observe it through a simplified lens: the gradual emergence of two broad spheres of influence. One is anchored by the United States and its network of G7 and NATO allies. The other is coalescing around the BRICS+ grouping and its expanding network of partner nations across the Global South and Eurasia. These are not rigid blocs in the Cold War sense, but rather gravitational fields of economic cooperation, institutional alignment, and diplomatic orientation.
This page summarises these structural trends using publicly available data and institutional sources. It is presented as an informational overview—not political commentary.
02 — BRICS Expansion
The Growth of BRICS (2023–2025)
The BRICS grouping—originally comprising Brazil, Russia, India, China, and South Africa—has undergone a historic expansion. At its 2023 summit in Johannesburg, the bloc announced the admission of new members effective January 2024. At its 2024 summit in Kazan, Russia, it created a new category of “partner countries,” further extending its reach.
August 2023 — Johannesburg Summit
BRICS invites six nations to join: Egypt, Ethiopia, Iran, the UAE, Saudi Arabia, and Argentina. Argentina later declines under a new government. Saudi Arabia has not yet formally accepted.
January 2024 — New Members Join
Egypt, Ethiopia, Iran, and the UAE officially become BRICS members, expanding the group from five to nine active members.
October 2024 — Kazan Summit
Russia hosts the summit and introduces a “partner country” status. Thirteen nations receive invitations, including Algeria, Indonesia, Kazakhstan, Malaysia, Nigeria, Thailand, Turkey, and Vietnam.
January 2025 — Indonesia Joins
Indonesia formally becomes the tenth full BRICS member, joining as one of the world’s leading nickel producers and Southeast Asia’s largest economy.
BRICS+ by the Numbers
Note: GDP figures are based on Purchasing Power Parity (PPP), which adjusts for cost-of-living differences. In nominal U.S.-dollar terms, BRICS’ share is smaller (approximately 29% in 2024). Both measures are valid; PPP better reflects domestic economic capacity, while nominal GDP reflects market exchange rates.
03 — Significance
Why BRICS Expansion Matters
The expansion of BRICS is significant for several structural reasons. It is not merely a diplomatic club—it represents a shifting distribution of economic weight, demographic scale, and institutional ambition.
Institutional Challenge
BRICS members founded the New Development Bank (NDB) in 2014 as an alternative to the World Bank and IMF. The expansion adds new shareholders and borrowers to this institution, strengthening its capacity as a development finance alternative for the Global South.
Commodity Power
With the addition of major oil producers (Iran, UAE) and agricultural economies (Ethiopia, Brazil, Indonesia), BRICS+ members collectively control significant shares of global energy, food, and mineral production. This gives the grouping substantial leverage in commodity markets and trade negotiations.
Global South Solidarity
The expansion reflects a broader desire among developing nations for greater representation in global governance. BRICS summits have consistently called for reform of the UN Security Council, the IMF voting structure, and the governance of international financial institutions. The grouping offers a platform for countries seeking to diversify their diplomatic and economic relationships beyond traditional Western-led frameworks.
04 — The Western Sphere
The U.S., G7, and Western Institutions
While BRICS expands, the United States and the G7 nations (United States, Canada, United Kingdom, France, Germany, Italy, and Japan) continue to represent a substantial share of global economic output and institutional influence.
The G7’s share of global GDP measured by PPP has declined from over 40% in 2000 to below 30% by 2024, driven largely by the rapid economic growth of China and India. Despite this relative decline, G7 nations retain dominant positions in global financial infrastructure, including the SWIFT payments network, the U.S. dollar’s role as the world’s primary reserve currency, and the governance structures of the IMF and World Bank.
Western nations also maintain extensive security architectures—NATO in Europe, bilateral alliances in the Indo-Pacific (with Japan, South Korea, Australia, and the Philippines)—and continue to use economic sanctions and trade restrictions as instruments of foreign policy. These tools remain powerful but face growing friction as BRICS+ nations develop alternative trade settlement mechanisms and institutional frameworks.
05 — Two Spheres
The Re-Emergence of Two Global Spheres
Geopolitical analysts increasingly describe the emerging world order as “multipolar with bipolar characteristics.” While many independent centres of power exist—the EU, India, Brazil, Turkey—the structural dynamics tend to organise around two gravitational poles:
Structural Overview: Two Spheres of Influence
Sphere A — Western Alignment
NATO & Indo-Pacific alliances
IMF, World Bank, SWIFT
U.S. dollar reserve system
EU & Five Eyes intelligence
Trade sanctions architecture
Sphere B — BRICS+ & Global South
New Development Bank (NDB)
SCO, Belt & Road Initiative
De-dollarisation initiatives
Commodity & energy alliances
Global South governance reform
It is important to emphasise that this is a simplified analytical model. In practice, many nations operate between or across these spheres. India, for example, is a founding BRICS member but also participates in the Quad (with the U.S., Japan, and Australia). Turkey is a NATO member that has applied for BRICS partnership. The Gulf states maintain economic ties with both spheres simultaneously.
The Munich Security Conference’s 2025 report notes that many Global South nations resist the framing of rigid blocs and prefer a “hedging” strategy that maximises their diplomatic flexibility. The transition is therefore best understood not as a clean split, but as a gradual restructuring of incentives, institutions, and trade patterns.
06 — Sources
Sources & References
The following publicly available sources were consulted in preparing this overview. Readers are encouraged to review these original materials for full context.
Institutional & Analytical Sources
- House of Commons Library (UK Parliament) — “The BRICS group: Overview and recent expansion,” April 2026. Link
- European Parliament Research Service — “Expansion of BRICS: A quest for greater global influence?” 2024. PDF
- Konrad Adenauer Stiftung — “BRICS expansion,” 2024. Link
- Munich Security Conference — “MSR 2025, Chapter 1: Multipolarization,” February 2025. Link
- IMF / BRICS Brazil Presidency — “BRICS GDP outperforms global average, accounts for 40% of world economy,” April 2025. Link
- Visual Capitalist — “G7 vs. the World: GDP, Population, and Military Strength,” July 2025. Link
- Statista — G7 combined GDP and share of world GDP data, 2025. Link
- Andaman Partners — “BRICS: Transforming Global Economic Power, Even As Members Compete,” June 2025. Link
- Amundi Research — “Multipolar World In Action 2025,” September 2025. Link
- NEXT IAS — “A Multipolar World with Bipolar Characteristics,” December 2025. Link