KYIV, Ukraine (AP) -- Ukrainian President Volodymyr Zelenskyy on Friday described the performance of the air force in parts of the country as "unsatisfactory," and said that steps are being taken to improve the response to large-scale Russian drone barrages of civilian areas.

Add Yahoo as a preferred source to see more of our stories on Google. Dozens of people have been killed in a drone attack by the paramilitary Rapid Support Forces (RSF) on a key town in war-torn Sudan's South Kordofan state, according to local media reports.