Sudan's War Crossed a Border. The First Casualty Was the Food Supply.

Sudan's civil war just crossed a border — and the first casualty was the food supply to 21 million people.

On February 23, Chad shut its entire 1,300km eastern border with Sudan after Rapid Support Forces (RSF) fighters crossed into Chadian territory, killing five soldiers and three civilians near the border town of Tina. Chad's government said the closure would last "until further notice."

Three weeks later, the fighting got worse.

On March 16, the RSF launched a major offensive on Tina — one of the last towns in Darfur still held by the Sudanese army after the RSF overran most of the region in 2025. Doctors Without Borders reported at least 17 dead and 123 wounded in the clashes. The Sudanese army said it repelled the attack. But the fighters who fled didn't vanish. They crossed the border.

The Door That Keeps Closing

Here's why this matters beyond the numbers.

The Adre crossing — the main point on Chad's eastern border — is described by the UN as "the most effective and shortest route" to deliver food aid into Darfur at the scale needed to prevent mass starvation. WFP calls it a critical lifeline. When it closes, the food stops.

Right now, 21.2 million Sudanese — 41 percent of the entire population — face acute food insecurity according to WFP. Famine conditions have spread to multiple towns in Darfur. WFP already paused food distribution to Zamzam camp, one of the region's largest displacement sites. The Sudan war has killed more than 40,000 people by UN estimates, with aid groups suggesting the real figure is far higher. Around 12 million have been forced to flee.

The Chad border closure isn't just a security decision. It's a structural interruption of the only viable food corridor into the worst hunger crisis in the world.

Why Chad Can't Just Reopen It

Chad is already stretched. The country hosts 1.5 million Sudanese refugees — a staggering load for a nation where 42 percent of its own population lives below the poverty line.

And the political dynamics are even more fragile than the economics. RSF leader Mohammed Hamdan "Hemedti" Dagalo has mixed Chadian-Sudanese ancestry. Chad's ruling Zaghawa ethnic group — the same group the RSF has been committing atrocities against across the border in Sudan — sees him as a potential threat to Chad's own stability. CSIS described the situation plainly: Chadian generals view Hemedti as "a potential pretender to the throne in Chad."

When a militia responsible for atrocities against your own ethnic group starts crossing your border with weapons, closing that border is rational. But rational decisions have consequences that go far beyond the people making them.

The Pattern Worth Watching

This is how regional wars spread — not through declarations, but through military factions losing ground and crossing frontiers. The RSF isn't disappearing. It's becoming Chad's problem.

Chad is the last relatively stable state on Sudan's western flank. Central African Republic is to the south. Libya to the north. If RSF fighters establish cross-border operations in Chad's east — or if Chad's internal ethnic tensions ignite over the refugee crisis — the conflict zone expands dramatically.

The Sudan war has already killed 40,000 people, displaced 12 million, and pushed 21 million into acute hunger. It's received a fraction of the global coverage of smaller conflicts elsewhere. The Albis Perception Gap Index has consistently tracked Sudan as one of the most underreported crises on the planet.

The RSF crossing into Chad is not a footnote to that war. It's the beginning of its next chapter.