Peace talks threatened by renewed violence

Colombia's peace negotiations with leftist FARC rebels hit a critical low as the group steps up violent attacks, and the government might walk away from the process unless the group shows more commitment to reaching a settlement, the government's top negotiator said.

The government has been in Cuba-hosted talks with the Revolutionary Armed Forces of Colombia, or FARC, since late 2012 to end a half-century-old insurgency. Although deals have been reached on most of the agenda, the process is now under unprecedented strain.

"The peace process is at its worst moment since we began talks. ... I want to tell the FARC in all seriousness, this could end. Someday, it's probable that they won't find us around the table in Havana," Humberto De la Calle told a journalist.