The mobile phone is proving to be an unexpected tool of female liberation in the Arab world.

Our guest editor this morning Dame Ann Leslie, veteran foreign correspondent, has been struck by the way they are being used by women to communicate beyond the watchful eyes of the moral police, and to turn a camera upon incidences of abuse.

Robert Lacey, author of Inside the Kingdom and Fawziah Bakr Al-Bark, a professor of education at the country's King Saud University, debate the state of women in Saudi Arabia.

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