Colombia's second-largest rebel group, National Liberation Army (ELN) has said it is ready to begin formal peace talks with the government. <br/><br/>Negotiations between ELN rebels and the government have been delayed over the ELN's continuous kidnappings. On Tuesday, the government called on the ELN to free its remaining hostages to take forward the peace talks.<br/><br/>The government and ELN agreed in March to hold formal negotiations in Ecuador in May but the rebels failed to meet the government's demand on halting Kidnappings. An earlier deal signed with Farc rebels, the country's largest rebel group has ended more than 50 years of war.