Here are some of the stories we are covering from around the world:

Sudan’s Military Has Used Chemical Weapons Twice, U.S. Officials Say

Sudan’s military has used chemical weapons on at least two occasions against the paramilitary group it is battling for control of the country, four senior United States officials said on Thursday. The determination came as the U.S. announced sanctions against the Sudanese military chief.

Azerbaijan’s Leader, Emboldened, Picks a Rare Fight With Putin

Russia’s president is said to have blamed birds or a Ukrainian drone for a Dec. 25 crash of an Azerbaijani plane. Azerbaijan says Russian air defenses were at fault.

Patients Are Dying in Hospital Corridors, British Nurses Say

A damning report on overcrowded hospitals added fuel to a painful debate over the crises at the British National Health Service.

@nytimes