People stand at the entrance of the Santa Ifigenia cemetery where the ashes of Fidel Castro were interred in Santiago, Cuba, Dec. 4, 2016. Ariel Fernandez/AP Photo

Cuban girls hold a Cuban flag and a picture of Fidel Castro as they wait to see the tomb of late Cuban leader Fidel Castro next to the entrance of the Santa Ifigenia cemetery in Santiago de Cuba, Cuba, Dec. 4, 2016. ERNESTO MASTRASCUSA/EPA

Cuban President Raul Castro speaks at a tribute to his brother and late former Cuban leader Fidel Castro (shown in image on wall) in Santiago de Cuba, Cuba, Dec. 3, 2016. Carlos Garcia Rawlins/Reuters

A woman wipes away tears as she clutches a photograph of former Cuban President Fidel Castro after his remains passed by during their four-day journey across the country, Dec. 3, 2016 in Santiago de Cuba, Cuba. Chip Somodevilla/Getty Images

Thousands line the streets to watch the convoy carrying the ashes of late Cuban leader Fidel Castro arrive in Santiago, Cuba, Dec. 3, 2016. ALEJANDRO ERNESTO/EPA

Cubans gather to watch the motorcade carrying the ashes of late Cuban leader Fidel Castro in Camaguey, Cuba, Dec. 2, 2016. The urn containing the ashes of Castro is on the four-day journey across the island in a funeral procession that will end in Santiago de Cuba, where his funeral will be held on Dec. 4, 2016. ALEJANDRO ERNESTO/EPA

People gather to pay homage to Fidel Castro at Revolution Square in Havana, Nov. 29, 2016. Tomas Munita/The New York Times/Redux

A man on horseback holds a picture of Fidel Castro while waiting for the convoy carrying the ashes of the Cuban leader on the side of the road near the town of Florida, Cuba, Dec. 2, 2016. Natacha Pisarenko/AP Photo

People react after the caravan carrying the ashes of Cuba's late President Fidel Castro passed through Las Tunas, Cuba, Dec. 2, 2016. Carlos Garcia Rawlins/Reuters

A woman and her son wait to see the urn with the ashes of Fidel Castro as it is driven through the streets of Las Tunas, Cuba, Dec. 2, 2016. Ronaldo Schemidt/AFP/Getty Images

People gather to watch a procession carrying the ashes of Cuban leader Fidel Castro through Esperanza, Cuba, Nov. 30, 2016. Natacha Pisarenko/AP Photo

A soldier is comforted after the urn with the ashes of Cuban leader Fidel Castro was driven through Santa Clara, Dec. 1, 2016, during its four-day journey across the island for the burial in Santiago de Cuba. Ronaldo Schemidt/AFP/Getty Images

Bertha Socarras, 91, wipes away tears as she recalls the time she personally waited on the late Cuban leader Fidel Castro, as a waitress in Camaguey, Cuba, Dec. 1, 2016. Rodrigo Abd/AP Photo

A Cuban child cries as he sits next to pictures of Fidel Castro and his brother, Cuban President Raul Castro as citizens gather to watch the motorcade carrying the ashes of late Cuban leader Fidel Castro in Santa Clara, Cuba, Dec. 1, 2016. The urn containing the ashes of Castro is on a four-day journey across the island, a funeral procession that will end in Santiago de Cuba. Alejandro Ernesto/EPA

The urn with the ashes of Cuban leader Fidel Castro is driven through Santa Clara, Cuba, Dec. 1, 2016, during its four-day journey across the island for the burial in Santiago de Cuba. Ronaldo Schemidt/AFP/Getty Images

High school students wait the urn with the ashes of Cuban leader Fidel Castro was driven through Santa Clara, Cuba, Dec. 1, 2016, during its four-day journey across the island for the burial in Santiago de Cuba. Ronaldo Schemidt/AFP/Getty Images

The urn with the ashes of Cuban leader Fidel Castro is driven through the streets of Havana starting a final four-day journey across Cuba, Nov. 30, 2016. The "caravan of freedom" will leave from Havana, making symbolic stops along the 950-kilometer (590-mile) trek that will end in the eastern city of Santiago de Cuba over the weekend. AFP/Getty Images

Placed in a small coffin covered by a Cuban flag the ashes of Cuban leader Fidel Castro are driven along the streets of Havana, Cuba, Nov. 30, 2016. Castro's ashes have begun a four-day journey across Cuba from Havana to their final resting place in the eastern city of Santiago. Natacha Pisarenko/AP Photo

Soldiers cry after the urn with the ashes of Cuban leader Fidel Castro was driven through Santa Clara, Cuba, Dec. 1, 2016, during its four-day journey across the island for the burial in Santiago de Cuba. Ronaldo Schemidt/AFP/Getty Images

People participate in a massive rally at Revolution Square in Havana in honor of late leader Fidel Castro. Castro, who ruled from 1959 until an illness forced him to hand power to his brother Raul in 2006, died at age 90. Pedro Pardo/AFP/Getty Images

An honor guard fires off 21-gun salutes to mark the start of services paying tribute to the late Fidel Castro, in Havana, Cuba, Nov. 28, 2016. Cuba's government has declared nine days of national mourning following Castro's death. Ricardo Mazalan/AP Photo

Alejandro Castro Espin, left, Raul Castro's son, offers his condolences to his cousin Antonio Castro Soto del Valle, Fidel Castro's son, at Revolution Square in Havana, Nov. 28, 2016. Castro's ashes will go on a four-day island-wide procession starting Wednesday before being buried in the southeastern city of Santiago de Cuba on December 4. AFP/Getty Images

A man salutes a tribute to Cuba's late President Fidel Castro at the Jose Marti Memorial in Revolution Square in Havana, Cuba, Nov. 28, 2016. Reuters

A man looks at floral tributes for late Cuban revolutionary leader Fidel Castro outside the Cuba Embassy in Mexico City, Nov. 28, 2016. Carlos Jasso/Reuters

Railway worker Ernesto Martinez poses for a photo as he waits in line to pay tribute to the late Fidel Castro near Revolution Plaza, in Havana, Cuba, Nov. 28, 2016. "Fidel taught us to share the few things we have," Martinez said. "He evangelizes with good examples. He taught us to think." Rodrigo Abd/AP Photo

Children pay their last respects to Cuban revolutionary icon Fidel Castro in Bayamo, Cuba, Nov. 28, 2016. AFP/Getty Images

Students of Havana University pay tribute to Cuba's late President Fidel Castro as they march to Revolution Square in Havana, Cuba, Nov. 28, 2016. Reuters

The wreath of Vietnam Communist Party Secretary General Nguyen Phu Trong, is seen placed next to a large portrait of Fidel Castro posted in front of the Cuban embassy in Hanoi, as Trong (not pictured) prepares to pay tribute to the late Cuban leader, on Nov. 28, 2016. Communist heavyweights China and Vietnam were swift to lament the death of Fidel Castro, with Hanoi's state media leading tributes to the loss of a "great friend and comrade." Hoang Dinh Nam/Getty Images

A Chinese man bows in front of images of late Cuban leader Fidel Castro amidst flowers and messages of condolences left at the Embassy of Cuba in Beijing, Nov. 28, 2016. Rolex Dela Pena/EPA

A man holds a picture of Farabundo Marti National Liberation Front Schafik Handal (L) and Fidel Castro, as part of a tribute following the announcement of the death of the Cuban revolutionary leader in San Salvador, El Salvador, Nov. 27, 2016. Jose Cabezas/Reuters

A man wrapped in the Cuban national flag, smokes a cigar outside the Cuban Embassy in Santiago, Chile, Nov. 26, 2016, the morning after Cuba's former leader Fidel Castro died at age 90. MARTIN BERNETTI/AFP/Getty Images

People react to the death of Fidel Castro, Nov. 26, 2016, in Miami, Florida. Randy Vazquez/SF Sun Sentinel/Polaris

People hold flowers in front of a portrait of Cuban historic revolutionary leader Fidel Castro at the Cuban embassy in Bogota, Colombia, Nov. 26, 2016. GUILLERMO LEGARIA/AFP/Getty Images

People gather with Cuban and Ecuadorean national flags outside the Cuban embassy in Quito, Ecuador, Nov. 26, 2016, the day after Cuban historic revolutionary leader Fidel Castro died at age 90. JUAN CEVALLOS/AFP/Getty Images

Palestinian medical student Adham Motawi, with an image of Fidel Castro, holds his head in disbelief during a gathering in Castro's honor in Havana, Cuba, Nov. 26, 2016, the day after his death. Ramon Espinosa/AP Photo

Antonia Martinez, of North Bergen, New Jersey, waves Cuban flags while standing outside of the Union of Cuban Ex-Political Prisoners following news of Fidel Castro's passing, Nov. 26, 2016, in Union City, New Jersey. Julio Cortez/AP Photo

A man places flowers on a fence as part a tribute outside the Cuban Embassy in Mexico, following the announcement of the death of Cuban revolutionary leader Fidel Castro, in Mexico City, Nov. 26, 2016. The placard reads: "Thanks, Fidel." Henry Romero/Reuters

Hundreds of young Cubans gather at Havana University, Nov. 26, 2016, in Havana, Cuba, to remember Cuban leader Fidel Castro, who died last night. ALEJANDRO ERNESTO/EPA

Members of the Cuban community react to the death of Fidel Castro, Nov. 26, 2016, in the Little Havana area in Miami, Florida. Wilfredo Lee/AP Photo

People celebrate after the announcement of the death of Cuban, revolutionary leader Fidel Castro in the Little Havana district of Miami, Florida, Nov. 26, 2016. Javier Galeano/Reuters

People celebrate after the announcement of the death of Cuban revolutionary leader Fidel Castro, in the Little Havana district of Miami, Florida, Nov. 26, 2016. Javier Galeano/Reuters

A portrait of Fidel Castro is surrounded by flowers as people gather outside the Cuban embassy in Santiago, Chile, Nov. 26, 2016, the day after he died at age 90. MARTIN BERNETTI/AFP/Getty Images

Indian members of Communist Party of India carry placards bearing the image of former Cuban president Fidel Castro during a remembrance rally in Chennai, India, Nov. 26, 2016. ARUN SANKAR/AFP/Getty Images