Rachel Mwanza in a scene from "War Witch"
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Oscars 2013: Child soldier film premieres in London

23 March 2013 Last updated at 05:12 GMT

An Oscar-nominated film about child soldiers in Africa has been showcased at this year's Human Rights Watch Film Festival in London.

Kim Nguyen's hard-hitting film, "War Witch", is the Canadian submission in the foreign language film category.

Other movies screened include Jeremy Teicher's debut film "Tall as the Baobab Tree" and "In the Shadow of the Sun" directed by Harry Freeland.

Helene Daouphars reports.