Voters in Colombia have rejected a landmark peace deal with Farc rebels in a shock referendum result, with 50.24% voting against it.
The deal was signed last week by President Juan Manuel Santos and Farc leader Timoleon Jimenez after nearly four years of negotiations.
But it needed to be ratified by Colombians in order to come into force.
Addressing the nation, President Santos said he accepted the result but would continue working to achieve peace.
He said the current ceasefire remained in place and that he had ordered negotiators to travel to Cuba to consult Farc leaders on the next move.
“I won’t give up,” he said. “I’ll continue the search for peace until the last moment of my mandate because that’s the way to leave a better country to our children.”
Meanwhile the Farc leader, known as Timochenko, said the group remained committed to securing an end to the war.
He also criticised the No campaign.
“The Farc deeply regret that the destructive power of those who sow hatred and revenge have influenced the Colombian people’s opinion,” he told reporters.
The rebels earlier agreed to lay down their weapons after 52 years of conflict to join the political process.
But critics said the deal treated the Farc, which the US still considers a terrorist group, too leniently.
The deal would have allowed rebel leaders to avoid a prison sentence if they confessed their crimes. The rebels were also promised 10 seats in congress for the next two elections.
- Who are the Farc?
- President Santos: From hawk to dove
- Guerrilla leader who talks peace
- Contentious points in peace deal