Angelina Jolie and UK's William Hague host international summit on sexual violence in wars

Actress Angelina Jolie and British Foreign Secretary William Hague are hosting a four-day summit on sexual violence in war zones, attended by officials from over 100 countries.

The summit, starting Tuesday, aims to identify ways to improve investigation of sexual violence and provide support for women and girls.

Hague and Jolie, a U.N. envoy, are scheduled to launch an international protocol to help strengthen prosecutions for rape in conflicts on Wednesday.

On Thursday Hague will host a meeting focusing on the Islamist terrorist group Boko Haram, which will be attended by foreign ministers from Nigeria and neighboring African countries.

The group's abduction of more than 300 schoolgirls in Nigeria in April has put attention on the issue of violence against women in conflict areas.