Russia and Ukraine have exchanged hundreds more prisoners as part of a major swap after an overnight attack on the Ukrainian capital that injured at least 15.

Russia launched a major attack on the Ukrainian capital Kyiv and killed at least 13 people in strikes across the country as the two sides released hundreds more prisoners on the second day of a major prisoner exchange.

The hourslong raids, involving hundreds of drones, were a reminder that any diplomatic resolution to the conflict remains far off.