Venezuela and Ecuador sought Monday to make Colombia pay a high diplomatic and economic price for killing a rebel leader in the Ecuadorean jungle - expelling its diplomats, ordering troops to the border and cracking down on trade across the border. But Colombia quickly struck back, revealing what it said were incriminating documents seized from the rebel camp that suggest its neighbors have been secretly supporting the leftist rebels' deadly insurgency. And in a tit-for-tat move, Venezuela later displayed the laptop of a slain drug trafficker, which it said contained information implicating Colombia's national police chief in the cocaine trade. Ecuadorean President Rafael Correa piled on the pressure saying Colombia's killing of the rebel leader Raul Reyes Saturday had scuttled talks between his government and the guerrillas to free 12 rebel-held hostages, including French-Colombian politician Ingrid Betancourt and three US defense contractors. "I'm sorry to tell you that the conversation were pretty advanced to free 12 hostages, including Ingrid Betancourt, in Ecuador," said Correa in a televised address. "All of this was frustrated by the war-mongering, authoritarian hands" of the Colombian government.