A ceremony marking the disarmament of Latin America's oldest guerilla movement takes place in of Mesetas, Colombia. Marxist Farc militants lay down their guns and officially transform into a political movement represented in parliament. But obstacles still lie in the path to peace.

The Farc still has arms caches, there are other armed groups in the jungle, and the leftist ELN finds itself in the path of right-wing paramilitaries with an eye on the drug trade.

Is this really a farewell to arms?