Tribal violence claims hundreds of lives every year in Yemen. The House of Peace encourages non-violent solutions to land disputes and 'love' crimes – violations of marriage arrangements that offend Yemen's conservative social code.
It's dangerous work. House of Peace members have died during mediation efforts, attempting to diffuse armed stand-offs.
But Sheikh AbdulRahman al-Marwani, the organization's director, also attends lengthy discussion forums with rival groups and arranges theatre workshops to spread the message of reconciliation.
The House of Peace is a rare example of effective civil society in Yemen. Its logo – a rifle with a red line through it, like a no-smoking sign – is emblazoned on water bottles, road signs and even spare-wheel covers throughout the country.
Photographs taken by Ginny Hill