Bernard-Henri Levy, French philosopher and journalist

Stephen Sackur speaks to the French writer and public intellectual who helped to persuade President Sarkozy to back the anti-Gaddafi rebels in Libya. Bernard-Henri Levy sees the bombing of Gaddafi's forces as a triumph for humanitarian interventionism and a defining moment in this Arab Spring. He's passionate, flamboyant and he wears his conscience on his sleeve, but should world leaders be taking his advice?