Last night, Russia sent another barrage of 300 kamikaze drones into Ukraine, a campaign they have ramped up by a factor of ten over the past 12 months. But, how do these drones work, and why are they favoured by both sides in the conflict?

Joining Séan to discuss is David Hambling, Journalist and Author of 'Swarm Troopers: How small drones will conquer the world'...