Work must be done to overcome divides even many decades after official agreements to end violence have been signed. But the process is neither simple nor direct, with social media as easily a tool for vitriol as for furthering understanding of others. What, and who, can help?

"We need to construct ourselves as cooperative entities, so that the way we understand belonging and identity does not have to be predicated on hostility towards others. Diana Francis talks to Vanessa Alexander and Jonathan Cohen about her latest book From Pacification to Peacebuilding.