Colombia's President Alvaro Uribe gestures between Colombian High Commissioner for Peace Franks Parl (L) and Colombian acting Defense Minister General Fredy Padilla (R) during a news conference at a military base in Bogota July 8, 2009. Uribe on Wednesday agreed to rebel demands that a leftist senator mediate the release of hostages, but only if all 24 police and soldiers held by the guerrillas are freed at the same time. REUTERS/John Vizcaino (COLOMBIA MILITARY POLITICS)