Colombia vows assault on FARC Colombia's president says fifteen soldiers have been killed in an ambush by leftist FARC rebels. COLOMBIA'S president says his military will mount a strong offensive against the country's biggest rebel movement after guerrillas killed 19 soldiers in two regions. President Juan Manuel Santos said on Sunday the army will go after the rebels even though the government has been in peace talks with the Revolutionary Armed Forces of Colombia since last year. Santos says Colombia has put its hand out to the FARC and is negotiating to end a half-century-long conflict. But, in his words, "we also have the club, we have the military force, and we are going to use it." Colombia's military says FARC rebels killed 15 government soldiers in northern Colombia on Saturday and four more soldiers in the south.