The Colombian government and the Farc rebels have signed a historic ceasefire deal, bringing them closer to ending more than five decades of conflict. The announcement is seen as one of the last steps before a full peace deal is signed, which is expected within weeks. Colombia's president and the Farc leader shook hands in celebration. The longest-running insurgency in the Western Hemisphere left an estimated 220,000 people dead and almost seven million displaced. The announcement in Havana caps formal peace talks that started three years ago in the Cuban capital.