"When war smashes its way into our living rooms as it did three weeks ago", writes Sarah Dunant, "it is pictures rather than words that hit hardest".

Sarah discusses the impact of images from war through the centuries and the history they write.

And she ponders which image from Putin's war will represent this moment in the future.

Producer: Adele Armstrong Sound: Peter Bosher Production coordinator: Gemma Ashman Editor: Hugh Levinson