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Chad closes eastern border
Chad announced it has closed its eastern border with Sudan "until further notice" after cross-border fighting in the border town of Tina/Al-Tina that Chadian authorities say killed Chadian soldiers and civilians, and involved incursions by forces from Sudan’s civil war.
“Chad has closed its eastern border with Sudan “until further notice,” citing repeated incursions by forces involved in Sudan’s civil war...”
Communications Minister Mahamat Gassim Cherif and government statements cited repeated incursions and violations as the reason for an immediate shutdown of crossings, with officials saying humanitarian movements may be allowed only with prior approval.

The closure was described both as a precaution to protect citizens and refugees and as a step to safeguard territorial integrity amid heavy fighting in nearby Sudanese border areas.
Disputed Chadian casualties
Reports differ on the scale and timing of the Chadian military casualties.
Several outlets cite Chadian statements that the weekend clashes in Tina killed five soldiers, three civilians and wounded 12 people.

Those outlets repeat figures given by Chadian officials, while other reports say higher or cumulative casualty counts.
Middle East Monitor gives a higher single-incident toll, saying the closure followed an attack that killed 13 Chadian soldiers.
Other sources cite multiple prior incidents since December that have cost between seven and nine Chadian soldiers' lives in separate encounters.
Aid access after border closure
Humanitarian organisations and analysts warn the border closure will further restrict aid routes into western Sudan and complicate movement for people fleeing fighting, at a time when Chad already hosts nearly a million Sudanese refugees.
“The shutdown... is expected to further hamper humanitarian operations in western Sudan, which depend on cross-border routes for aid deliveries.”
Several reports stress the closure risks hampering deliveries that depend on cross-border routes and will affect camps and spontaneous sites where large refugee populations have been registered.
Chad response to RSF claims
Chadian officials framed the move as defensive and warned they 'reserve the right to retaliate' against further incursions.
They also rejected accusations that N’Djamena supports the RSF or serves as a transit route for RSF supplies.
Government spokespeople were quoted by multiple outlets, and those same reports note Sudanese authorities have accused Chad of supporting the RSF, a charge Chad denies in several pieces.
Chad and Sudan conflict
Analysts warn the closure could draw Chad deeper into the wider Sudan conflict and destabilise the region.
“The wider war in Sudan, between the military led by Gen. Abdel Fattah al-Burhan and the Rapid Support Forces led by Mohamed “Hemedti” Dagalo, has periodically spilled over into Chadian territory since April 2023.”
Reporting reiterates the context of a broader fight between Sudan's military and the RSF since April 2023.

Casualty and displacement figures differ between outlets, with some pieces citing about 11 million displaced or in need while others cite around 13 million or larger humanitarian-impact estimates.
Those differences reflect varied emphases and data points across reporting.
The discrepancy indicates uncertainty about the war's human cost in available reports.