Ukraine war: Russian double-tap strikes hit civilians then rescuers too

On the night of 3 April, a swarm of Russian drones attacked Kharkiv, in Ukraine's northeast.

The country's second-largest city has been targeted almost incessantly since the start of Russia's full-scale invasion.

But this time was worse than usual, because, when rescue workers arrived at the scene, there was a second strike. Three of them were killed.