Peace at last? Colombia, FARC rebels sign historic agreement (part 1)

They've come from the four corners of the globe to see them sign on the dotted line. Colombia's government and the FARC rebellion are set to end the continent's longest-running conflict, and perhaps with it the end of Che Guevara-style Marxist guerrilla movements in Latin America. But first Colombians must approve the deal in a referendum. The opposition, led by hawkish former president Alvaro Uribe thinks President Santos is rewarding war crimes with impunity. Could this be peace at last?