Yobe State · Crisis deep dive

Fourth Republic — Obasanjo · Yar'Adua · Jonathan (1999–2015)

Boko Haram attacks (sustained, 2012–present); Dapchi schoolgirl abduction 2018 (110 girls); Government Girls Science Technical College Chibok kidnapping 2014 spilled into Yobe; Nguru bombing 2013Northern Abandonment Cycle

Methodology

Tier 1 · primary

Courts. Gazettes. National archives.

Tier 2 · corroborating

OCCRP. HRW. BudgIT. TheCable.

Tier 4 · tertiary, flagged

Wikipedia only where primary is pending. Always labelled.