In meetings with the government of Benin on a humid and cloudy day of July 2023, officials were surprisingly reassuring about the danger lurking beyond their borders. Early warning signs were growing by the day that extremist violence from the Sahel was spilling over into their country.

At the time, violent incidents in northern Benin and Togo were rare. But today, villagers describe a pattern that has become familiar across the Sahel: nighttime raids, armed men appearing along forest tracks, and security forces scrambling to secure remote communities near the Burkinabe border. The frequency and scale of those incidents revealed the Sahel’s rampant extremist insurgency is moving south toward the Gulf of Guinea.

For more than a decade, the Sahel has been the world’s epicenter of terrorist violence. What began in 2012 as a rebellion in northern Mali evolved into a complex regional conflict involving Islamist extremists, local militias, and criminal networks across Mali, Burkina Faso, Niger, Chad, and northern Nigeria. Today, the region accounts for more than half of global terrorism‑related deaths, a dramatic increase since 2019.

The question is no longer whether the conflict will spread beyond the Sahel. It already has. The real question is whether coastal West Africa will address the governance gaps that enabled the Sahel crisis to escalate or repeat the same mistakes.

The Sahel Crisis Expands

For years, coastal West African states were widely viewed as insulated from Sahelian instability. That assumption is increasingly difficult to sustain.

Militant groups linked to Jama’at Nusrat al‑Islam wal‑Muslimin (JNIM) and the Islamic State in the Sahel have steadily expanded operations toward the Gulf of Guinea. By 2021, JNIM fighters were already staging attacks from eastern Burkina Faso and southwestern Niger into northern Benin. Since then, attacks in border areas of Benin and Togo have increased sharply.

Across coastal West Africa, terrorist incidents rose dramatically between 2022 and 2024, particularly along northern border regions where state presence remains limited. Benin has been among the hardest hit of the coastal states, with fatalities rising sharply in 2025 even if the overall numbers remain far below those seen in Burkina Faso or Mali.

Togo has experienced a similar trajectory. JNIM claimed its first attack there in 2022, and attacks have since continued in the Savanes region, targeting both civilians and military outposts.

These incidents are not isolated cross‑border raids. As recent analysis and reporting note, JNIM and other militant organizations are deliberately probing the northern peripheries of coastal states. Their strategy is gradual penetration rather than rapid territorial conquest: embedding in communities, establishing supply routes, and exploiting governance gaps.

A Regional System of Conflict

To understand this expansion, it helps to view the Sahel conflict not as a series of isolated insurgencies but as an evolving regional conflict system.

Over the past decade, groups such as JNIM have shifted from classic terrorist tactics toward hybrid insurgency; they increasingly attempt to control territory, regulate local economies, and establish parallel governance structures rather than operate solely through clandestine attacks. In parts of Mali and Burkina Faso, militants have collected taxes, mediated disputes, and enforced their own systems of justice.

This strategy has proven effective where state institutions are weak or absent. For communities long neglected by central governments, militant governance — however coercive — can sometimes appear more predictable than state governance.

At the same time, militant networks are deeply intertwined with organized crime. Smuggling routes linking West Africa to North Africa and the Mediterranean through the Sahel provide revenue streams and logistical infrastructure for armed groups. Livestock trafficking, fuel smuggling, and illegal mining, to name a few, all feed into this conflict economy.

The insurgency is also evolving technologically. Armed groups that once relied primarily on small arms and roadside bombs are increasingly experimenting with drones, encrypted communications, and digital financial tools.

Nigeria: A Convergence Zone

Recent developments in northern Nigeria illustrate how these dynamics are converging across borders.

According to analysis by the Armed Conflict Location & Event Data Project (ACLED), violence has surged in the Benin-Niger-Nigeria border triangle. Militants exploit forest routes and protected areas linking Burkina Faso, Niger, Benin, and Nigeria to move fighters and supplies. Their long-term objective seems to be the establishment of corridors linking the interior of the region to the Atlantic coast.

This region has become a convergence zone where Sahel‑based extremist networks intersect with Nigerian militant groups and criminal bandit networks.

The implications became clearer in October 2025 when JNIM claimed its first attack on Nigerian territory near the Benin border. The attack was small, but symbolically important: It signaled the group’s ambition to expand into West Africa’s largest country.

Nigeria already faces multiple security crises, from Islamic State‑affiliated insurgents in the Lake Chad Basin to bandit networks in the northwest. The growing overlap between banditry, organized crime, and Islamist extremism raises the possibility that Nigeria could increasingly resemble the hybrid insurgencies destabilizing parts of the Sahel.

The Vulnerable Coast

Ghana illustrates both the resilience of some coastal states and the strategic ambitions of Sahel-based militant groups. Despite remaining free of large-scale terrorist attacks, northern Ghana has increasingly been used as a logistics and recovery zone by militants operating across the border in Burkina Faso.

Fighters reportedly cross into Ghanaian territory to obtain supplies, move equipment, and seek medical treatment before returning north to the battlefield. The pattern reflects a deliberate strategy: Rather than attacking immediately, groups such as JNIM are building networks and supply chains that could later support deeper expansion toward the Gulf of Guinea.

Analysts note that Ghana’s relative stability — stronger institutions, functioning security services, and less acute local grievances — has so far limited militant penetration. Yet the country’s role as a logistical rear base underscores the regional nature of the conflict.

As these networks spread across coastal states, Western policymakers increasingly worry that the Sahel insurgency could eventually threaten major trade routes, ports, and energy infrastructure along the Atlantic coast. These concerns reflect a growing recognition that the drivers of extremism in coastal West Africa mirror many of the structural dynamics that fueled conflict in the Sahel.

In many countries, economic opportunity and political influence remain concentrated in southern urban centers, while northern border regions suffer from chronic underdevelopment and limited state presence. These disparities create fertile ground for recruitment.

Tensions between farmers and pastoralist communities, particularly among the herding Fulani populations, have also intensified in recent years. Restrictions on seasonal migration and confrontations with security forces have deepened grievances in some areas.

Research by the International Crisis Group highlights how groups like JNIM deliberately exploit these local tensions, positioning themselves as protectors of marginalized communities while undermining state authority.

Security responses have sometimes worsened these dynamics. In several areas, community militias mobilized to fight extremists have been accused of targeting Fulani civilians, reinforcing cycles of grievance and retaliation.

Stopping the Next Phase

The Sahel’s experience shows that terrorism thrives where governance fails.

Military force is necessary to contain violent groups, but it cannot address the underlying drivers of instability. When security operations occur without accountability, they risk deepening the same grievances that militants exploit.

This is why strengthening the rule of law, judicial accountability, and civilian oversight of security forces remains central to long‑term stabilization. Communities are far more likely to cooperate with authorities when they trust that abuses will be investigated and justice delivered.

The spread of terrorist violence toward the Gulf of Guinea is not inevitable. But preventing a wider regional crisis requires acting before insurgent networks become entrenched. Coastal governments will need to invest far more heavily in northern border regions, not only in security forces but also in governance, justice systems, and economic opportunity.

Regional cooperation will also be essential. Militant networks operate across borders, and effective responses must do the same through intelligence-sharing, joint patrols, and coordinated law enforcement action. International partners, including the United Nations, should prioritize strengthening institutions rather than simply expanding military assistance. Investments in judicial capacity, anti‑corruption measures, and accountable security sector reform can have far greater long‑term impact.

Benin and Togo now sit on the frontline of a conflict that began far to the north. Whether they become the next theater of a widening insurgency, or the place where the region begins to reverse the tide, will depend less on battlefield victories than on whether governments address the governance deficits and root causes that allowed the Sahel crisis to grow in the first place.