The second group of victims of the Colombian armed conflict pose for a photo after arriving to participate in the peace talks between the revolutionary Armed Forces of Colombia (FARC) and members of Colombia's government peace negotiation team at the peace talks in Havana, Cuba, Tuesday, Sept. 9, 2014. (AP Photo/Vladimir Molina, Pool)

A group of victims of the Colombian armed conflict arrives at the Jose Marti International Airport to participate in the peace talks between to revolutionary Armed Forces of Colombia (FARC) and members of Colombia's government peace negotiation team at the peace talks in Havana, Cuba, Friday, Aug. 15, 2014. (AP Photo/Vladimir Molina, Pool)

A group of victims of the Colombian armed conflict arrives at the Jose Marti International Airport to participate in the peace talks between to Revolutionary Armed Forces of Colombia (FARC) and members of Colombia's government peace negotiation team at the peace talks in Havana, Cuba, Friday, Aug. 15, 2014. (AP Photo/Vladimir Molina, Pool)

Cuban President Fidel Castro speaks to the medical students of the Girón school, 1971. (AP Photo/Pablo Pildain/Prensa Latina via AP Images)

Cuban Revolutionary Special Forces (FAR) participate in military exercises coined Operation Bastion 2013 in Sancti Spiritus, Cuba, Tuesday, Nov. 19, 2013. (AP Photo/Prensa Latina, Garal)

Young pioneers climb aboard a tank during a visit to the Cuban Armed Forces in Cuba in an undated photo. (AP Photo/Prensa Latina via AP Images)

Cuban leader Fidel Castro, center, talks to his brother and Army General Raul Castro, left, during the 130th anniversary of the birth of Cuban hero Jose Marti, represented in the statue in background, at the Revolution Square in Havana, Cuba, Jan. 30, 1982. (AP Photo/Prensa Latina via AP Images/Miguel Vinas)

Students attend classes at National School Carlos Verdugo 23 in Cuba, in an undated photo. (AP Photo/Prensa Latina via AP Images)

Young pioneers watch military exercises by the Cuban Armed Forces in Cuba in an undated photo. (AP Photo/Prensa Latina via AP Images)

In this May 5, 1991 photo, Cuban boxer Arnaldo Mesa competes at the International Boxing Tournament Giraldo Cordova Cardin in Sancti Spiritus, Cuba. Cuban authorities said on Tuesday, Dec. 18, 2012 that Olympic silver medalist boxer Arnaldo Mesa has died. He was 46. (AP Photo/Miguel Vinnas, Prensa Latina via AP Images)

Dutch rebel Tanja Nijmeijer from the Revolutionary Armed Forces of Colombia, or FARC, left, speaks during a press conference with fellow member of the FARC negotiating team Ivan Marquez, center right, and Jesus Santrich,second from right, at the headquarters of the Cuban agency Prensa Latina in Havana, Cuba, Tuesday, Nov. 6, 2012. Peace talksbetween the FARC and the Colombian government schedule to start on Nov. 15. (AP Photo/Jorge Pérez, Prensa Latina)

Dutch rebel Tanja Nijmeijer from the Revolutionary Armed Forces of Colombia, or FARC, is seen during a press conference at the headquarters of the Cuban agency Prensa Latina in Havana, Cuba, Tuesday, Nov. 6, 2012. Nijmeijer is in Havana as a member of the FARC team for peace talks with the Colombian government schedule to start on Nov. 15. (AP Photo/Jorge Pérez, Prensa Latina)

Dutch rebel Tanja Nijmeijer from the Revolutionary Armed Forces of Colombia, or FARC, is seen during a press conference at the headquarters of the Cuban agency Prensa Latina in Havana, Cuba, Tuesday, Nov. 6, 2012. Nijmeijer is in Havana as a member of the FARC team for peace talks with the Colombian government schedule to start on Nov. 15. (AP Photo/Jorge Pérez, Prensa Latina)

Negotiators Ivan Marquez, left, and Jesus Santrich from the Revolutionary Armed Forces of Colombia, or FARC, answer questions at a press conference at the headquarters of the Cuban agency Prensa Latina in Havana, Cuba, Tuesday, Nov. 6, 2012. Peace talks between the FARC and the Colombian government are schedule to start on Nov. 15. (AP Photo/Jorge Pérez, Prensa Latina)

FILE - In this Nov. 6, 2012 file photo, Ivan Marquez, chief negotiator of the Revolutionary Armed Forces of Colombia, or FARC, answers questions at a press conference at the headquarters of the Cuban agency Prensa Latina in Havana, Cuba. The two chief negotiators didn't shake hands or look at one another as talks to end Colombia's stubborn five-decade-old conflict were inaugurated in Norway last month. On Monday, Nov. 19, 2012, Marquez, a rebel former seminarian and Humberto de la Calle, a sage veteran of Colombian politics, sit down to negotiate in earnest in Havana. (AP Photo/Jorge Perez, Prensa Latina, File)

In this Sept. 20, 1960 photo, Cuba's leader Fidel Castro, center, speaks with Soviet Premier Nikita Khrushchev, right, as his Foreign Minister Raul Roa, left, looks on at the Hotel Theresa during the United Nations General Assembly in New York. The world stood at the brink of Armageddon for 13 days in October 1962 when President John F. Kennedy drew a symbolic line in the Atlantic and warned of dire consequences if Soviet Premier Nikita Khrushchev dared to cross it. On the eve of the 50th anniversary of the Cuban missile crisis, historians now say it was behind-the-scenes compromise rather than a high-stakes game of chicken that resolved the faceoff, that both Washington and Moscow wound up winners and that the crisis lasted far longer than 13 days. (AP Photo/Prensa Latina via AP Images)

In this undated picture Cuban Army Gen. Raul Castro speaks at an undisclosed location in Havana, Cuba. (AP Photo/Prensa Latina via AP Images)

This undated photo shows Cuban Army Gen. Raul Castro at a celebration in Cuba's House of Syndicated Workers, based in Moscow. (AP Photo/Prensa Latina via AP Images)