"The United States calls on the government of Sudan to cease all chemical weapons use and uphold its obligations under the CWC," the statement read, referring to the Chemical Weapons Convention under which signatories have committed to destroy their stockpiles of the weapons.

The US has formally accused Sudan’s government of using chemical weapons during its ongoing war with the paramilitary Rapid Support Forces (RSF), in what it says is a clear breach of international law. In a statement issued on Thursday, the US State Department said sanctions will follow, citing evidence of chemical weapons use in 2024.