Sahel Juntas Exit ECOWAS Into AES as Investors Reprice Nigeria Côte d’Ivoire Senegal Ghana Risk

Economy · West Africa

West Africa is not experiencing a single rupture but a layered fragmentation of institutions, currencies and security guarantees. The formal exit of the Sahel juntas into the Alliance of Sahel States has split the regional map, while the CFA franc and ECO projects remain unresolved and France steps back.

The Legal Break That Took Effect

On 29 January 2025 the withdrawal of Burkina Faso, Mali and Niger from ECOWAS became formally effective. The move followed their joint announcement on 28 January 2024, which cited dissatisfaction with sanctions and the bloc’s handling of security challenges.

ECOWAS treaty rules required one year’s notice, making 29 January 2025 the binding date. In December 2024 the bloc’s heads of state had adopted an exit transition period running from 29 January 2025 to 29 July 2025.

That transition included a six-month grace period for the departing states to reconsider. ECOWAS Commission President Omar Alieu Touray said the bloc would keep its doors open to the three countries and allow them to return at any time.

The formal statement from ECOWAS confirmed that the withdrawal had become effective on 29 January 2025. The three states had collectively represented about 10% of ECOWAS GDP.

The departure removed about 17.4% of the bloc’s population and 54.35% of its landmass. This territorial loss is strategically significant for investors mapping transport corridors and market access.

How the Alliance of Sahel States Consolidated

The Alliance of Sahel States began as the Liptako-Gourma Charter signed by the three juntas in September 2023. That document created a mutual defence pact that later served as the legal foundation for a full confederation.

On 6 July 2024 the three governments signed a Confederation Treaty in Niamey. The treaty upgraded the pact into the Alliance of Sahel States with a 25-point programme of joint action.

The programme covers foreign policy coordination, security cooperation, economic development and free movement of people and goods. It also includes plans for a joint investment bank.

By 29 January 2025 the AES began issuing a joint biometric passport, presented as the most visible symbol of institutional separation from ECOWAS. The passport launch coincided with the effective withdrawal date.

Institutional consolidation continued beyond security and documents. On 24 August 2026 the Confederal Parliament of AES was formally installed in Niamey, marking a further step toward executive and legislative integration.

ECOWAS After Losing Three Founding Members

ECOWAS lost three founding members but maintained a transitional framework to cushion trade and travel. The framework preserves recognition of ECOWAS-branded passports and identity documents held by AES citizens.

It also continues trade benefits under the ECOWAS Trade Liberalisation Scheme, known as ETLS. The scheme normally permits duty-free movement of approved goods among member states.

Visa-free movement rights for citizens of AES states within ECOWAS remain in place under the transitional arrangements. Ongoing support for ECOWAS officials from the departing countries also continues.

The bloc’s authority has been tested beyond the Sahel. Guinea-Bissau was suspended on 29 November 2025 after a coup, while Guinea had its ECOWAS suspension lifted on 28 January 2026 following the 2025 presidential election.

A January 2026 analysis argues that the AES exit is testing free movement and regional legitimacy within ECOWAS. Three founding members now contest the bloc’s authority and its perceived alignment with foreign powers.

The AES Security Project and Its Limits

The Alliance of Sahel States announced a joint 5,000-strong military unit as part of closer defence integration. The unit is intended to coordinate counter-terrorism across the three territories.

The three governments were installed via coups between 2020 and 2023. Their declared objectives include sovereignty from foreign influence, especially France and an ECOWAS they view as Western-aligned.

A May 2026 analysis notes that the AES is real and institutionally consolidating. It had achieved much of what it set out to achieve in the first three years.

The same analysis warns that the insurgency has not yet been pushed back. The central question of whether the alliance can survive on its own resources remains open.

For investors, this means security risk in the Sahel remains high even though governance structures have changed. The AES has not yet demonstrated that it can stabilise the region without external backing.

The CFA Franc Zone Under Pressure

The CFA franc is the common currency of two regional blocs. In West Africa the relevant grouping is UEMOA, also known as the West African Economic and Monetary Union, which includes eight ECOWAS members, among them Côte d’Ivoire and Senegal.

The CFA franc has historically been linked to the French treasury and the euro through a fixed peg. France has provided convertibility guarantees, a role now under political strain as Paris retreats militarily and economically.

The unresolved reform of the peg creates uncertainty for investors holding local-currency exposure in Dakar or Abidjan. Any change to convertibility or the fixed rate would affect debt valuation and trade pricing.

France’s military and economic retrenchment weakens the political foundation of the peg. Even without formal reform in 2026, investors now price a higher risk of future adjustment or delayed policy decisions.

The CFA franc question is not only monetary. It is also a proxy for broader sovereignty demands that have driven the Sahel states to leave ECOWAS and challenge French influence.

The ECO Single-Currency Project Stalls

ECOWAS had long envisioned the ECO as a single currency for its member states. The project was designed to be built on convergence criteria across inflation, debt and fiscal deficits.

The departure of Mali, Burkina Faso and Niger has reduced the bloc’s membership to twelve states. That alone complicates the political negotiation over currency adoption.

The ECO project remains stalled amid unresolved CFA franc questions and divergent monetary policy tracks. UEMOA members using the CFA franc and countries like Nigeria and Ghana with independent currencies remain far apart.

No detailed September 2026 timetable for the ECO launch has been published in the verified research. The split in ECOWAS has made a credible single-currency deadline harder to announce.

For investors, the stalled ECO means foreign exchange risk remains fragmented across the region. Portfolio managers cannot hedge a single West African currency and must treat each market separately.

France’s Military and Economic Retreat

France’s military footprint in the Sahel has receded as the juntas expelled French forces and pivoted to other security partners. The retrenchment removes a layer of external stabilisation that investors had priced for decades.

The AES states have made sovereignty from French influence a central political goal. Their formation of a confederation is explicitly designed to operate outside the security architecture France once dominated in the Sahel.

France’s economic role in the CFA franc zone is also under question. The convertibility guarantee linked to the French treasury was always a pillar of monetary stability for UEMOA members.

As Paris withdraws militarily, the political willingness to maintain that financial guarantee weakens. Even if the guarantee remains technically in place in 2026, the regional credibility of the arrangement has declined.

Investors in Senegal and Côte d’Ivoire must now consider that France’s reduced footprint changes the risk profile of institutions long viewed as externally guaranteed.

Trade Fragmentation and Border Closures

The split between AES and ECOWAS has introduced new border frictions even though a transitional framework preserves some old rights. In practice, administrative recognition of documents and goods can vary at crossing points.

Trade routes linking coastal ports to inland Sahel markets now cross two distinct institutional blocs. A shipment from Ghana to Niger must satisfy both ECOWAS transitional rules and AES requirements.

The AES aims to create free movement of people and goods under its own rules. That creates parallel systems with ECOWAS and raises compliance costs for logistics operators.

Border closures between the blocs have not been permanent since late January 2025, but episodic disruption persists. Uncertainty over recognition of goods and documents raises delay risk.

For investors, fragmentation means less predictability in supply chains. Companies using West African corridors must now map dual regulatory environments for the same journey.

What This Means for Nigeria

Nigeria remains the largest economy in ECOWAS and is outside the CFA franc zone. The AES exit strengthens Nigeria’s relative weight inside ECOWAS but also raises its exposure to border and security spillovers.

Northern Nigeria shares long borders with Niger, an AES member. Trade and movement across that border now operate under transitional ECOWAS rules but with added political uncertainty.

Nigerian manufacturers exporting into the Sahel face new documentation risks. The ETLS benefits continue in principle, yet the legal basis for enforcement is weaker after the AES exit.

Nigeria’s independent currency, the naira, means it is not directly exposed to CFA franc reform. However, trade with CFA-using neighbours like Benin and Côte d’Ivoire still exposes Nigerian firms to regional monetary uncertainty.

Investors in Nigeria should watch whether Abuja uses the ECOWAS split to deepen its own regional influence or whether security problems along the Niger border raise logistics costs.

What This Means for Côte d’Ivoire and Senegal

Côte d’Ivoire and Senegal are both UEMOA members using the CFA franc peg. Their currency risk is directly tied to unresolved questions about France’s convertibility guarantee and the stalled ECO project.

Both countries benefit from stronger institutions and coastal access relative to the Sahel. Their main exposure is to the political uncertainty around a common currency that neighbours are questioning.

Côte d’Ivoire’s economy depends on exports of cocoa and other commodities priced in euros through the peg. Any future adjustment of the CFA franc would hit export revenue and debt service in local currency terms.

Senegal shares a border with Mali, an AES member. Trade and transport across that border now face institutional duplication even if visa-free movement persists under transitional rules.

For investors, these two countries remain the most institutionally anchored in francophone West Africa. But the regional integration crisis means their currency and trade arrangements are no longer as stable as they appeared before 2024.

What This Means for Ghana

Ghana has an independent currency, the cedi, and is a member of ECOWAS but not UEMOA. It is not directly exposed to the CFA franc peg, but it faces the same regional fragmentation in trade corridors.

Ghanaian exports to Burkina Faso and Mali now cross into the AES. The transitional framework allows trade benefits, yet enforcement depends on cooperation between two blocs that are politically divided.

Ghana’s port at Tema serves as an entry point for goods destined for the Sahel. Delays at northern borders or new documentation rules would reduce the attractiveness of that corridor.

The stalled ECO project means Ghana cannot expect a single currency hedge soon. Ghanaian firms trading with Côte d’Ivoire must still manage cedi-to-CFA exchange risk with no regional monetary anchor.

Investors in Ghana should focus on logistics and border compliance costs. The country’s macroeconomic recovery remains exposed to any further disruption in West African trade routes.