In an unexpected result to Sunday's referendum on a peace deal agreed by the Colombian government and Farc, Colombians have rejected the agreement, with 50.24% voting against it.
The peace agreement, which was signed by the president Juan Manuel Santos and the Farc leader, known as Timochenko last week, would allow an effective amnesty for war crimes and permit 10 unelected seats in congress for Farc at the next election.
Responding to the result, Mr Santos, who had previously said there was no plan B, said, "I won't give up."
"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," he added.