(The Washington Post) – President Juan Manuel Santos announced on Friday that he will sign a peace accord with the Revolutionary Armed Forces of Colombia later this month in Cartagena. “This is perhaps the most-important announcement I’ve made in my entire life,” Santos said in a speech, adding that the signing ceremony with the country’s main rebel group will take place Sept. 26 in the Caribbean city. Last week, Santos’ government and the FARC reached a historic deal bringing to an end 52 years of hostilities by Latin America’s largest insurgency. The agreement must still be endorsed by Colombians, who will vote on the accord in a nationwide referendum Oct. 2.