Colombian President Juan Manuel Santos and Rodrigo Londoño – alias Timochenko, the leader of Latin America’s longest-running insurgency, the FARC – have signed a historic deal which sets out a process of transitional justice for Colombia. They have committed to signing the final peace agreement within six months.

After more than five decades of armed conflict, six months is the blink of an eye, and both Colombia and the wider world must think fast to work out what comes next.