Violence in Mali is pushing Mauritania to the brink

Mauritania, once considered a counterterrorism success story, sits at the edge of escalating violence. In the last year, Jamaat Nusrat al Islam wal Muslimin (JNIM), al-Qaeda’s affiliate in the Sahel, has expanded its operational presence in towns and villages along Mauritania’s southeastern border. But, according to locals, the most immediate threat to the country’s stability comes from its neighbor, Mali.On April 25, coordinated attacks rocked Mali, exposing the limits of state control there. Terrorists and separatist rebels targeted multiple cities, including the capital, assassinating the defense minister and prompting Malian forces and Russian Africa Corps paramilitary forces to withdraw from key northern bases. Then, on July 4, rebels launched a second, smaller offensive, targeting central and northern cities, demonstrating their resolve and operational sophistication. As the situation spirals, the United States is weighing airstrikes against JNIM militants, according to the Washington Post.The conflict in Mali is no longer contained within its borders. Refugee flows, cross-border military operations, and deteriorating relations between Bamako and Nouakchott are putting new pressures on Mauritania, particularly in vulnerable border regions. Left unchecked, these tensions could erode the security gains that Mauritania has maintained for more than a decade. Mauritania’s fragile stability A close-up map of Mauritania and Mali in West Africa. (Matthew Nichols1/Shutterstock)Mauritania is distinguished by its relative stability in a volatile region; the country has not experienced a terrorist attack in nearly 15 years. The official narrative is that Nouakchott combined military operations with programs that promote moderation, including some that invited imams to preach tolerance to imprisoned terrorists. The country has “deconstructed extremist discourse,” said a former minister during an interview this spring. Others claim Mauritania reached an understanding with al-Qaeda affiliates, citing documents seized during the raid that killed Osama Bin Laden. As security improved in Mauritania, its neighbor, Mali, became embroiled in a series of crises. In 2012, advancing Tuareg rebels seemed poised to collapse the state, prompting France to deploy its forces to halt the offensive. Confronted by intense military pressure, some rebel factions began collaborating with al-Qaeda-affiliated groups, ultimately giving rise to an indigenous, and increasingly entrenched, terrorist presence. As of February, more than 300,000 refugees from Mali had fled to Mauritania, straining the state’s resources. The situation along the border is complicated, to say the least. Mauritanians are concerned about the influx of Malian refugees, who some local officials estimate arrive in the east at a rate of “hundreds per day” during an interview with the author this spring. Malians, on the other hand, are suspicious of Mauritania, which they accuse of serving as a rear base for terrorists after Nouakchott reportedly sealed a non-aggression pact with regional al-Qaeda affiliates. At the same time, strong transborder ties connect the two countries. Border communities have familial and financial relations in both countries. Commercial routes run along the more than 1,000-mile border. Roughly 70% of Mauritanian livestock graze in Mali annually. Along the border, economic interdependence has historically transcended politics and security crises. Rising tensions along the border But Malian forces, alongside the Kremlin-backed Africa Corps, stand accused of killing scores of Mauritanian herders since the seasonal migration began in January. Local officials in Mauritania’s Guidimakha region report at least a dozen disappearances since then, leaving relatives uncertain of their fate. Despite government warnings, herders continue to cross into Mali, a necessity in a country where livestock accounts for roughly 10% of GDP.This is an inversion of expected dynamics: herders can transit through terrorist-controlled areas but experience violence in areas under Bamako’s “control.” With terrorists, they are able to negotiate in-kind payments in exchange for safe passage through a region or access to pasture land therein. It is primarily in state-controlled areas where herders are targeted and, by some accounts, killed.Malian operations have also reportedly crossed into Mauritanian territory, targeting border villages like Melga and Gogui. In border regions, locals now argue that Malian and Africa Corps operations are the primary source of instability. “When [terrorists] cross the border, they leave their arms behind… When the Malian military came, they were armed to the teeth. I pray that they do not come again,” said the mayor of a town that experienced such an incursion.Security sources can recount at least six incidents in which Malian patrols crossed into Mauritanian villages this year, and the state’s response has left some citizens frustrated. Mauritania’s denials that the incursions occurred within its territory prompted a member of parliament to rhetorically question whether his district was considered part of Mali. Residents of affected villages insist they are Mauritanian, with Mauritanian schools and government offices.During an audience with President Mohamed Ould El Ghazouani earlier this year, Mauritanians living along the border urged the state to attack Mali or at least secure grazing rights. But there are no easy solutions to this problem. Escalation risks conflict, while restraint could result in more cross-border incursions. According to a member of parliament, Ghazouani said during a private meeting with the opposition in April that tensions with Mali were his greatest concern. Malian instability as regional risk The deepening insecurity in Mali is accelerating an already fragile situation. The Malian military’s shortcomings were on full display in late April, when a terrorist and rebel onslaught put them on the backfoot nationwide. They have repeatedly failed to defend population centers from attacks, demonstrating how precarious their effective control of territory is. That leaves Mauritanians vulnerable. “The Malian military kills because it cannot distinguish between friend and foe,” according to a local researcher. Mauritanian herders probably will continue to find themselves in the crosshairs of counterterrorism operations as conditions on the ground deteriorate. Diplomacy has failed to end the problem. The Malian military junta has alienated itself from other neighboring states, including Algeria and Côte d’Ivoire, and now appear intent on doing the same with Mauritania. The present turmoil makes renewed diplomacy more difficult. “We have no partner in Bamako, where the regime is living the last days of its power,” said a Mauritanian opposition politician during an interview with the author. Preventing a wider crisis As security deteriorates and JNIM attempts to position itself as an alternative to the Malian state, the Malian military’s attacks against Mauritanians could prove dangerous. Herders, whose livelihoods depend on cross-border mobility, face mounting insecurity with few options for redress. Locals warn that these pressures could drive some toward “alliances” with terrorists. Mali’s actions, intended to project force and security, could inadvertently generate the very grievances and vulnerabilities that sustain terrorist movements. The region is already home to one of the world’s most powerful al-Qaeda affiliates. A more entrenched JNIM, with access to a larger pool of sympathizers or potential recruits, would threaten both Mali and its neighbors. In a worst-case scenario, cooperation between Mauritanian herders and JNIM in southern Mali could prove fatal to the Mauritanian model, ending 15 years of relative security in the country.The conflict’s spread beyond Mali’s borders has proved disastrous for regional security. In 2025, the Global Terrorism Index ranked Burkina Faso, which neighbors Mali, as the country most affected by terrorism for the third consecutive year. JNIM attacked a military airbase in Niger’s capital city earlier this month. As conflict expands, U.S. leaders are sounding the alarm. In late May, the U.S. AFRICOM Commander called West Africa “an intelligence black hole” and testified that terrorists in the region threatened U.S. personnel, facilities, and interests. A JNIM presence in Mauritania would complicate the intelligence picture and exacerbate the problem. Washington should monitor the situation, though it is ultimately Mali and Mauritania’s to resolve. This would require sustained engagement and a return to regular dialogue. The two states could rely on the Mali-Mauritania Joint Interministerial Commission or revive a more technical commission for border demarcation to help reduce misunderstandings in remote areas where civilians, soldiers, and militants are in close proximity. Equally important, Bamako should make an effort to demonstrate greater restraint during counterterrorism operations, and Nouakchott should remain open to dialogue if it wishes to address Malian distrust and suspicion. Mauritania and Mali cannot change their geography, nor the border communities and economies that bind them. As insecurity proliferates, it has become evident that only a coordinated, cross-border approach can prevent local tensions from evolving into a broader regional crisis.