Is sexual violence continuing with impunity?

A four days summit is due to start on Tuesday in London with ministers, gender activists, NGOs and individuals pledging to end the horror of sexual violence and other forms of abuse in conflict zones.

But what can such a summit achieve? Focus on Africa's Bola Mosuro spoke to Zainab Hawa Bangura, the UN's Special Representative on Sexual Violence in Conflict - as she is one of the main participants.