Colombia's Marxist guerrillas told President Alvaro Uribe to step down if he wanted to guarantee a deal to free rebel hostages held for years in jungle camps. MOREINFO: The FARC announcement this week that it would hand three hostages to Venezuela's socialist President Hugo Chavez fuelled hopes for breaking a deadlock over captives, including French-Colombian presidential candidate Ingrid Betancourt and three U.S. citizens held for more than four years. But one day after promising to free three hostages as a sign of goodwill, the FARC guerrilla group returned to a hardline stance with Uribe that suggests no quick deal for the release of more of their captives. SCRIPT: Hopes that three Colombian hostages would be freed within days are fading after the Marxist guerrillas holding them attached new conditions for their release. The Revolutionary Armed Forces of Colombia, better known as the FARC, are demanding the resignation of President Alvaro Uribe. It's another...