After the bloody civil war in Sudan's Darfur region 20 years ago, the world said "never again."

And yet it is happening again, U.N. High Commissioner for Refugees Filippo Grandi said in a sobering interview.

Since April 2023, a war between the Sudanese army and the paramilitary Rapid Support Forces (RSF) has left tens of thousands of people dead and created the world's largest hunger and displacement crises.