Blue Nile and South Kordofan war (2011)
After South Sudan split away, fighting broke out between Sudan's army and SPLM-N rebels in Blue Nile and South Kordofan. The rebels held rural areas near the Ethiopian and South Sudanese borders for years.
Tens of thousands fled into Ethiopia and South Sudan as the army bombed rebel-held zones.
The SPLM-N kept a durable presence in Blue Nile, roots that shaped which fighters joined the 2026 offensive.
The same rebel movement and the same border geography drive today's fight. Blue Nile has been contested ground for over a decade.
