The determination comes as the United States prepares to announce sanctions against the Sudanese military chief, saying there is strong evidence of atrocities in the country.

President Biden said negotiators appeared to be on “the brink” of an agreement to end the fighting and free the hostages held by Hamas.

A force fighting Sudan’s army in a brutal civil war committed massacres and rape that amount to genocide, the Secretary of State said, two decades after a finding of genocide in the same region.