Good Friday Agreement: When Bono met Trimble and Hume

It became the defining image of the Good Friday Agreement.

Rockstar Bono standing alongside the leaders of unionism and nationalism - David Trimble and John Hume - at the Waterfront Hall in Belfast.

The men behind the idea, David Kerr, the former director of communications with the Ulster Unionist Party, and Conall McDevitt, the former director of communications with the Social Democratic and Labour Party, told the BBC's Mark Carruthers how they made it happen.

You can listen to the full Red Lines podcast on BBC Sounds.