The history of humanity, as told through one hundred objects from the British Museum in London, is drawing to an end. Throughout this week, Neil MacGregor, the director of the British Museum in London, has been with things that help explain the modern world. He has explored political and sexual politics and freedoms, and now reflects on the impact of guns and weapons in the modern world - especially in Africa where thousands of children have been participants in brutal conflicts. He tells the story through a work of art - a sculptured throne made from decommissioned guns like the ubiquitous AK47. We hear from Kester, the artist from Mozambique who created theThrone of Weapons and test the reaction to the piece of Kofi Annan, the former Secretary-General of the United Nations. Producer: Anthony Denselow