How Operation Christmas, leaflets in North Korea and CIA pop put a creative twist on propaganda WedWednesday 23 updated WedWednesday 23 Soldiers in camouflage string up blue Christmas lights in a tree in the Colombian jungle. ( Print text only A decade ago, Jose Miguel Sokoloff came up with an audacious advertising campaign. The brief, which came directly from the Colombian military, was to win over hardened armed guerrillas in the jungle. His weapon of choice? Christmas lights. Soldiers in camouflage strung up bright blue lights in large trees at strategic points in the jungle, with a large sign directed at the Revolutionary Armed Forces of Colombia, or FARC.