Historian and psychoanalyst Daniel Pick of Birkbeck College, University of London tells the story of how aerial bombardment - from Zeppelins to B52s, from H-Bombs to drones - has made the unconscious mind a field of battle.

Daniel explores how, in the shadow of the First World War, Freud turned his analytical eye from desire to the 'death drive', and how psychoanalysts probed what might happen if another war came.

Would survivors of mass aerial bombardment hold up psychically, or would they collapse into infantile panic? Or would they become uncontrollably aggressive?

And why do humans come to be so aggressive in the first place?

When the war - and the bombers - did come to Britain, it appeared that survivors were much more stoical and defiant than had been expected.

But, as Daniel discovers, brave faces concealed a great deal of psychological damage.

With historian Lyndsey Stonebridge, he visits the Wellcome Library to see - courtesy of the Melanie Klein Trust - the case notes of the psychoanalyst Melanie Klein on her analysis of a troubled ten year old boy, 'Richard'.

What do Klein's notes, and Richard's extraordinary drawings, reveal about his attitude to being bombed?

Daniel examines how, with the advent of the Cold War and the distinct possibility that bombs and missiles could destroy civilisation, technocrats trying to plan for the end of the world coped with staring into the abyss.

Finally, Daniel shows how a radical new turn in aerial bombardment opens up this field anew. Nuclear weapons can destroy the planet; but what does it do to the mind to live under the threat of 'surgical' attack by unmanned drones?

With: Derek Gregory, Peter Hennessy, Dagmar Herzog, Richard Overy, Lyndsey Stonebridge

Producer: Phil Tinline.