West African bloc unites against Sahel alliance with strict rules

The Economic Community of West African States (ECOWAS) has adopted a firmer diplomatic stance toward the Alliance of Sahel States (AES). During an ordinary summit in Lungi, Sierra Leone, West African leaders established a decisive rule: no member state will be permitted to hold separate talks with Mali, Burkina Faso, or Niger on critical regional matters. This move aims to reinforce the unity of a West African bloc weakened since the three Sahelian nations formally withdrew in January 2025.

The decision to centralize negotiations reflects growing unease in Abuja. Since the AES was formalized as a confederation, several regional capitals have explored pragmatic arrangements with their Sahelian neighbors, particularly concerning free movement, security cooperation, and trade. By locking in a unified approach, ECOWAS seeks to prevent its solidarity from crumbling under the pressure of national short-term interests.

Strength in numbers against the Sahel alliance

This collective strategy is rooted in leverage. Facing an AES that has built its identity on sovereign defiance and rejection of regional oversight, ECOWAS is banking on the combined strength of its remaining members to safeguard decades of integration progress. Shared customs tariffs, unrestricted mobility, and preferential trade terms are among the most vulnerable pillars—any erosion of these systems could undermine half a century of regional development.

Yet this unified front carries risks. By banning bilateral channels, ECOWAS risks paralysis if internal consensus proves unattainable. Coastal states like Senegal, Côte d’Ivoire, and Togo maintain deep economic and human ties with Sahelian capitals. Their logistics corridors serve landlocked economies whose stability directly impacts their own.

The Sahel alliance forges its own path

On the opposing side, the AES is steadily building its institutional framework. Plans for a confederation passport, a proposed common currency, and a joint 5,000-strong counterterrorism force reflect Bamako, Ouagadougou, and Niamey’s determination to create a credible alternative bloc. Diplomatic overtures to Russia, Turkey, and Iran further reshape West Africa’s geopolitical landscape.

In this standoff, ECOWAS’s position walks a fine line between firmness and openness. Leaders in Lungi reaffirmed their commitment to structured dialogue with the AES on issues vital to citizens—particularly mobility and cross-border trade—but insisted such talks must follow ECOWAS’s terms, not those dictated by the Sahelian alliance.

Outstanding disputes demand resolution

A slate of technical disputes remain unresolved. The status of Sahelian nationals residing within ECOWAS territory, customs treatment of goods from AES countries, shared infrastructure governance (including the Niger Basin Authority), and mutual recognition of academic credentials are among the flashpoints where delays could swiftly disrupt economies and daily life.

The post-summit schedule has not been made public. Diplomats indicate a technical commission will be tasked with drafting engagement terms for negotiations with Bamako, Ouagadougou, and Niamey. Sierra Leone, as the current ECOWAS chair, will spearhead this unified position in discussions with Sahelian authorities.

A delicate political balancing act remains. Several member states, including Senegal under President Bassirou Diomaye Faye, have recently advocated a more conciliatory approach toward the AES, warning that isolating Sahelian regimes could backfire. The collective discipline imposed in Lungi will now face its toughest test—surviving these divergent perspectives or risking irrelevance.