The center-left coalition that has ruled this country for two decades is being jolted by the insurgent presidential campaign of the telegenic son of a famous guerrilla leader. Seven weeks before Chile’s election, Marco Enríquez-Ominami, a...

Colombian President Alvaro Uribe has said he may run for a third term if his coalition fails to unite around a strong candidate, prompting debate on Thursday about the future of democracy in the conflict-weary country. Uribe, an important U.S. ally in...