Tensions are rising in South America after Colombian troops killed a leading FARC commander during a pre-dawn raid on Saturday across the border in Ecuador. At least sixteen other FARC guerrillas were killed in the attack. President Alvaro Uribe described the killing of Raul Reyes as a big blow to the rebel movement. Raul Reyes had been viewed as a possible successor to FARC’s seventy-seven-year-old leader, Manuel Marulanda.