Nigeria's Boko Haram Began With One Man's Death. It Killed 350,000.

The insurgency that has killed more than 350,000 people across Nigeria, Cameroon, Chad, and Niger began with a single extrajudicial execution in a police station in Maiduguri on July 30, 2009. Mohammed Yusuf, a 39-year-old preacher who had spent a decade building a following among unemployed young men in northeastern Nigeria, was shot in the head by officers from the Borno State police after being captured alive. His body was dumped outside the station. Within 48 hours, his followers had begun burning government buildings.

Seventeen years later, the movement Yusuf founded—Jama'atu Ahlis Sunna Lidda'awati wal-Jihad, known globally as Boko Haram—has fractured into rival factions, displaced 2.7 million people, and turned the Lake Chad Basin into a permanent war zone. The Nigerian military has been fighting it since 2009. It has not won.

The Preacher and the Police

Mohammed Yusuf was not born a jihadist. Born in Girgir village in Yobe State in 1970, he studied Islamic theology in Maiduguri and began preaching in the late 1990s. His message was simple: Western education was forbidden (boko haram in Hausa), the Nigerian state was corrupt and un-Islamic, and true believers should withdraw from secular society. He built a mosque and school complex in Maiduguri's Railway Quarter that attracted thousands of followers, many of them unemployed young men from impoverished northern states.

By 2009, Yusuf's sermons had grown more radical. He condemned democracy, rejected Nigerian law, and called for the implementation of strict Sharia across the north. His followers clashed with police in Bauchi State in July 2009 after officers stopped members riding motorcycles without helmets—a minor traffic violation that escalated into a five-day armed confrontation across four northern states. More than 800 people were killed, most of them Yusuf's followers. Yusuf himself was captured at his father-in-law's house in Maiduguri on July 30.

Yusuf's execution radicalized what had been a largely non-violent, if extremist, religious movement. His deputy, Abubakar Shekau, went into hiding and re-emerged in 2010 with a new strategy: armed jihad against the Nigerian state. Between 2010 and 2014, Boko Haram transformed from a local sect into a regional insurgency capable of seizing territory the size of Belgium.

The Saudi Connection

Yusuf's theological worldview was shaped by Wahhabist and Salafi teachings imported from Saudi Arabia. Throughout the 1990s and 2000s, Saudi religious foundations and private donors funded the construction of mosques and Islamic schools across northern Nigeria, often staffed by clerics trained in Saudi Arabia. The Islamic University of Medina awarded scholarships to hundreds of Nigerian students, including several who would later join or support Boko Haram.

There is no evidence that the Saudi government directly funded Boko Haram's armed operations. But researchers at the Institute for Security Studies and the International Crisis Group have documented how decades of Saudi-funded religious education created the ideological infrastructure that Yusuf and Shekau exploited. By the mid-2000s, northern Nigeria had hundreds of Salafi-oriented mosques and madrassas preaching a rigid interpretation of Islam incompatible with Nigeria's secular legal system.

After Yusuf's death, Boko Haram's funding came from extortion, kidnapping for ransom, bank robberies, and—after 2014—taxation of populations in territories it controlled. By 2015, the group was generating an estimated $10 million annually from criminal activities, according to a UN Security Council report. It did not need Saudi donations. It had oil, cattle, and captives.

Chibok and the War's Global Face

On the night of April 14, 2014, Boko Haram fighters stormed the Government Girls Secondary School in the town of Chibok, Borno State. They abducted 276 girls, ages 16 to 18, loading them onto trucks and driving into the Sambisa Forest. The kidnapping became global news. Michelle Obama tweeted a photo holding a sign reading #BringBackOurGirls. The Nigerian government, which had downplayed the insurgency for years, was forced to admit it had lost control of large swathes of the northeast.

The Chibok abduction was neither the first nor the largest mass kidnapping by Boko Haram. In February 2014, fighters had abducted 59 students from a boarding school in Buni Yadi, Yobe State, killing 29 boys and taking the rest. In February 2018, they abducted 110 schoolgirls from Dapchi, Yobe State; most were later released after negotiations, but one girl, Leah Sharibu, was kept because she refused to convert to Islam. She has not been seen since.

Between 2014 and 2020, Boko Haram and its splinter faction ISWAP abducted an estimated 10,000 women and girls, according to Amnesty International. Most were never recovered. Many were forced into marriage, sexual slavery, or used as suicide bombers. The Nigerian military launched multiple operations to rescue them. Most failed.

The 2016 Split: ISWAP Emerges

By 2015, Boko Haram controlled an estimated 20,000 square miles of territory across northeastern Nigeria, including the towns of Gwoza, Bama, and Monguno. Abubakar Shekau declared a caliphate and pledged allegiance to the Islamic State in March 2015. But the relationship quickly soured. Islamic State leaders in Syria criticized Shekau's indiscriminate killing of Muslim civilians, his use of children as suicide bombers, and his refusal to follow IS directives.

In August 2016, IS announced it had replaced Shekau with Abu Musab al-Barnawi, the son of Mohammed Yusuf. The organization split. Shekau's faction retained the name Boko Haram and continued operating from the Sambisa Forest, focusing on suicide bombings and raids on civilian targets. Al-Barnawi's faction, known as Islamic State West Africa Province (ISWAP), established a base in the Lake Chad islands and adopted a more strategic approach: targeting military installations, governing captured territories, and avoiding attacks on Muslim civilians.

Shekau himself was killed in May 2021, reportedly by suicide during a battle with ISWAP fighters in the Sambisa Forest. His death did not end the insurgency. ISWAP absorbed many of his fighters and continues to control territory across Borno, Yobe, and Adamawa states, as well as islands in Lake Chad. As of April 2026, it remains the dominant jihadist force in the region.

The Lake Chad Basin: A Regional Failure

The conflict has never been contained within Nigeria. Boko Haram and ISWAP operate across borders in Cameroon, Chad, and Niger, exploiting weak state presence in the Lake Chad region. The Multinational Joint Task Force (MNJTF), established in 2015 by the African Union and comprising troops from Nigeria, Niger, Chad, Cameroon, and Benin, was supposed to eliminate the insurgency within two years. It has not.

The MNJTF has been hobbled by under-funding, lack of coordination, and competing national interests. Chad withdrew most of its forces in 2020 after President Idriss Déby was killed by rebels in the Sahel; his son and successor, Mahamat Déby, redeployed troops to fight insurgents in Chad's north and west. Niger's military junta, which seized power in July 2023, expelled French and U.S. forces and has prioritized fighting jihadists affiliated with al-Qaeda and Islamic State in the Sahel over the Lake Chad Basin.

Nigeria's military, with 135,000 active troops, remains the largest force fighting the insurgency. But it has been accused of mass atrocities, extrajudicial killings, and torture by Human Rights Watch, Amnesty International, and the United Nations. In 2015, Amnesty documented the deaths of at least 8,000 men and boys in military detention facilities in Maiduguri, Damaturu, and Giwa Barracks between 2011 and 2015. In many cases, detainees died of starvation, disease, or torture.

The Niger Delta Connection

While the insurgency raged in the northeast, a parallel crisis was unfolding 800 miles south. The Niger Delta, home to Nigeria's oil industry, has been plagued by armed militancy, oil theft, and environmental devastation for decades. But the two conflicts are not separate. Security analysts and Nigerian intelligence officials have documented links between insurgent groups in the north and criminal networks in the Delta, particularly in the trade of stolen weapons and ammunition.

Between 2020 and 2025, criminal syndicates in the Niger Delta stole an estimated 400,000 barrels of crude oil per day—roughly 20 percent of Nigeria's official production—according to the Nigerian National Petroleum Corporation. Much of it was refined in illegal facilities and sold domestically or smuggled to neighboring countries. The stolen oil generated an estimated $3 billion annually, dwarfing Boko Haram's revenue from extortion and kidnapping.

Investigative reports by Nigerian journalists and the International Crisis Group have shown that some of the same military commanders fighting Boko Haram in the northeast have financial interests in oil theft networks in the Delta. The profits fund lifestyles, political campaigns, and—in some cases—private militias. The Nigerian state is being hollowed out from two directions: jihadist insurgency in the north, and elite kleptocracy in the south.

The 2023 Election and the Forever War

The February 2023 presidential election was supposed to mark a turning point. Bola Tinubu, a former governor of Lagos State and political godfather of Nigeria's ruling All Progressives Congress, won with 36.6 percent of the vote in a fractured three-way race. He promised to end the insurgency, fix the economy, and restore security. Three years later, none of those promises have been kept.

The election itself was marred by widespread irregularities, voter suppression, and violence. Opposition parties accused the Independent National Electoral Commission of rigging results in key states, including Lagos, Rivers, and Kano. International observers from the European Union and the Carter Center noted "significant problems" with electronic voting systems and result transmission. Legal challenges were dismissed by Nigeria's Supreme Court in October 2023.

In the northeast, the insurgency continues. ISWAP fighters attacked a military convoy in Borno State on April 12, 2026, killing 14 soldiers and seizing two armored vehicles. In Yobe State, schools remain closed in at least seven local government areas deemed too dangerous for teachers or students. In Maiduguri, the city where Mohammed Yusuf was killed 17 years ago, residents live behind blast walls and checkpoints, their movements controlled by a security apparatus that has failed to provide security.

What Comes Next

There is no military solution to the Lake Chad Basin crisis. Every Nigerian president since 2009 has promised to defeat Boko Haram "within months." None have succeeded. The insurgency persists because it is rooted in conditions that have not changed: mass unemployment, state collapse in rural areas, environmental degradation around Lake Chad, and a political class that views the northeast as expendable.

The African Union, the Economic Community of West African States, and Western governments have spent billions on counterterrorism programs, training missions, and humanitarian aid. The violence continues. ISWAP now controls more territory than Boko Haram did at its 2015 peak. Its fighters are better armed, better organized, and more disciplined than the security forces arrayed against them.

In Maiduguri, residents speak of the conflict in the past tense, as if it were a historical event rather than an ongoing catastrophe. Markets function. Children attend school in fortified compounds. Life continues in the shadow of checkpoints and the occasional suicide bombing. But no one believes the war is over. They have learned that in Nigeria, wars do not end. They simply become permanent.