Farc negotiator Pablo Catatumbo (left) shakes hands with Colombia’s government negotiator Frank Pearl during a conference in Havana yesterday. Colombia and the Marxist-led Farc rebels have reached agreement on the critical issue of agrarian reform, the two sides said  in what appeared to be a major step forward for the peace process aimed at ending their long war. Photograph: Enrique De La Osa/Reuters

Colombia and the Marxist-led Farc rebels have reached agreement on the critical issue of agrarian reform in a major step forward for the peace proces(...)