2012
A military coup in Mali and a Tuareg rebel offensive (MNLA) collapsed state control of the north; jihadist groups, including AQIM-linked factions, rapidly seized the power vacuum and occupied major northern cities including Timbuktu and Gao.
2013
France launched Operation Serval, deploying thousands of troops to halt the jihadist advance; the intervention recaptured northern cities but failed to eliminate insurgent networks, which dispersed into the broader Sahel.
2015
Violence spread into central Mali and neighboring Burkina Faso and Niger as jihadist factions exploited inter-communal tensions; civilian casualties and displacement began rising sharply across all three countries.
2017
Key jihadist factions — Ansar Dine, AQIM's Sahara branch, and Al-Mourabitoun — merged to form JNIM, creating a unified al-Qaeda affiliate; the Islamic State in the Greater Sahara (ISGS) simultaneously expanded as a rival force, fracturing the insurgency into two competing jihadist blocs.
2020
Mali suffered its first coup in August 2020, followed by a second in May 2021; Burkina Faso experienced two coups in 2022, and Niger's elected president Bazoum was overthrown in July 2023, producing three military juntas hostile to Western presence across the region.
2022
France ended Operation Barkhane after nearly a decade and was expelled from Mali; the Malian junta invited Wagner Group mercenaries as replacements, a model subsequently adopted by Burkina Faso and Niger, shifting the conflict's external backing from Western to Russian.
2023
Mali, Burkina Faso, and Niger formalized the Alliance of Sahel States (AES) with a mutual defense pact and withdrew from ECOWAS; JNIM and ISGS continued expanding territorial control, besieging provincial capitals and cutting key supply routes across all three countries.
2024
JNIM blockaded Mali's Timbuktu for months, causing a humanitarian crisis; despite Wagner/Africa Corps support, junta forces failed to reverse insurgent territorial gains, leaving large rural areas under de facto jihadist governance across the Sahel.