President Barack Obama, first lady Michelle Obama and their daughters Malia and Sasha stand during a minute of silence for the victims of the Brussels attacks, accompanied by Cuban President Raul Castro (R) prior to a baseball game between Tampa Bay Rays and Cuba's National Team at Estadio Latinoamericano in Havana, March 22, 2016.

President Barack Obama talks to Rachel Robinson, the widow of baseball great Jackie Robinson, during a baseball game at Estadio Latinoamericano in Havana, March 22, 2016.

President Barack Obama talks with former New York Yankee shortstop Derek Jeter, while watching an exhibition baseball game with Cuban President Raul Castro between the Cuban National team and the MLB Tampa Bay Rays at Estadio Latinoamericano in Havana March 22, 2016.

President Barack Obama delivers a speech at the Gran Teatro in Havana, March 22, 2016.

"I have come here to bury the last remnant of the cold war in the Americas," said Obama in a live speech broadcast to the Cuban people.

President Barack Obama waves as he arrives to deliver a speech at the Gran Teatro in Havana, March 22, 2016.

With Cuban President Raúl Castro on, Obama commented on Cuba's crackdown on dissent stating, "I believe citizens should be free to speak their minds without fear."

Cuba's President Raúl Castro waves to the audience as he takes his seat near Cuba's prima ballerina, Alicia Alonso (2nd L), before U.S. President Barack Obama makes a speech to the Cuban people in the Gran Teatro de la Habana Alicia Alonso, in Havana March 22, 2016.

People take their seats hours before President Barack Obama delivers an address to the Cuban people at the Gran Teatro de la Habana Alicia Alonso in Havana, March 22, 2016.

Cuban President Raúl Castro (R) and President Barack Obama prepare for joint press conference at the Revolution Palace in Havana on March 21, 2016.

President Barack Obama (C-L) and Cuban President Raúl Castro meet at the Revolution Palace in Havana on March 21, 2016.

Obama and his Cuban counterpart Castro met Monday in Havana's Palace of the Revolution for groundbreaking talks on ending the standoff between the two neighboring countries.

Cuban President Raúl Castro (C) and U.S. President Barack Obama (R) review Cuban soldiers during a welcome ceremony for Obama at the 'Palacio de la Revolucion' in Havana, March 21, 2016.

First Lady Michelle Obama greets Cuban girls as she arrives for a Let Girls Learn roundtable at the Fabrica de Arte Cubano, in Havana, March 21, 2016.

Let Girls Learn is an initiative launched by the Obamas in 2015 to help overcome obstacles preventing adolescent girls from attending and completing school.

President Barack Obama places a wreath at the Jose Marti monument during a ceremony in Havana, March 21, 2016.

Back-dropped by a monument depicting Cuba's revolution hero Ernesto "Che" Guevara, President Barack Obama listens to the U.S. national anthem during a ceremony at the Jose Marti Monument in Havana, March 21, 2016.

"It is a great honor to pay tribute to Jose Marti, who gave his life for independence of his homeland. His passion for liberty, freedom, and self-determination lives on in the Cuban people today," Obama wrote in dark ink in the book after he laid a wreath and toured the memorial dedicated to the memory of Jose Marti.

President Barack Obama waves to people as he enters a restaurant in Havana, Sunday, March 20, 2016.

Cubans wave and take pictures as President Barack Obama's car passes by on its way to the Revolution square in Havana on March 21, 2016.

President Barack Obama greets hotel workers in Havana, Sunday, March 20, 2016.

Patrons at a Havana hotel wave as President Barack Obama, first lady Michelle Obama, daughters Malia and Sasha walk past in Havana, Sunday, March 20, 2016.

President Barack Obama laughs while having dinner with first lady Michelle Obama, daughters Malia and Sasha in Havana, Sunday, March 20, 2016.

President Barack Obama walks through Old Havana, Sunday, March 20, 2016.

President Barack Obama and Ben Rhodes, Deputy National Security Advisor for Strategic Communications and Speechwriting, talk with Cardinal Jamie Ortega while touring La Catedral de la Virgen Maria de la Concepcion Inmaculada with Cardinal Jamie Ortega in Old Havana, Sunday, March 20,

First lady Michelle Obama and daughters Malia and Sasha tour La Catedral de la Virgen Maria de la Concepcion Inmaculada in Old Havana, Sunday, March 20, 2016

President Barack Obama and daughter Malia share a laugh as Malia interprets in Spanish for a restauranteur in Havana, Sunday, March 20, 2016.

President Barack Obama greets people in Old Havana, Sunday, March 20, 2016.

President Barack Obama, first lady Michelle Obama, daughters Sasha and Malia, and Michelle Obama's mother Marian Robinson take a walking tour of Old Havana, March 20, 2016.

Eusebio Leal Spengler, Historian of Havana, leads the tour of the Carlos Manuel de Céspedes del Castillo Monument. The statue honors the Cuban planter, also known as Padre de la Patria (father of the country), who freed his slaves and made the declaration of Cuban independenc

U.S. Secretary of State John Kerry (L) leads a delegation of diplomats as President Barack Obama and Cuba's President Raul Castro hold their first meeting on the second day of Obama's visit to Cuba in Havana, March 21, 2016.

President Barack Obama and first lady Michelle Obama walk to the motorcade after touring Old Havana, Sunday, March 20, 2016.

Obama's trip is a crowning moment in his and Cuban President Raul Castro's ambitious effort to restore normal relations between their countries.

Tourists and local residents take pictures as President Barack Obama (not pictured) tours Old Havana with his family at the start of a three-day visit to Cuba in Havana on March 20, 2016.

Obama touched down on the island March 20 for a landmark trip aimed at ending decades of Cold War animosity.

People climb a window grate as they get wet in the rain, in hopes of catching a glimpse of President Barack Obama during his visit to Cathedral Square in Old Havana, Cuba, Sunday, March 20, 2016.

Members of dissident group "Ladies in White", wives of former political prisoners, are detained during their protest on March 20, 2016 in Havana.

Wives of former political prisoners, members of the dissident group "Ladies in White," are detained during their protest on March 20, 2016 in Havana.

A Norwegian tourist wears a shirt with a likeness of U.S. President Barack Obama in Vieja Havana as Obama takes part in a walking tour nearby in Havana, Cuba on March 20, 2016.

A man wearing a T-shirt with a picture of U.S. President Barack Obama is seen at the Havana Cathedral on March 20, 2016.

U.S. President Barack Obama and first lady Michelle Obama greet children of U.S. embassy staff in Havana on March 20, 2016.

Obama arrived in Cuba to bury the hatchet in a more than half-century-long Cold War conflict that turned the communist island and its giant neighbor into bitter enemies.

President Barack Obama's daughters Malia (C) and Sasha (R) arrive with their parents at the Jose Marti international airport at the start of a three-day visit to Cuba, in Havana on March 20, 2016.

President Barack Obama, first lady Michelle Obama, daughters Malia and Sasha greets dignitaries upon arrival in Havana, Sunday, March 20, 2016.

President Barack Obama, first lade Michelle Obama, and their daughters Malia and Sasha, exit Air Force One as they arrive at Havana's international airport for a three-day trip in Havana on March 20, 2016.

President Barack Obama joins others in looking out the window of Air Force One on final approach into Havana, Cuba, March 20, 2016.

Air Force One carrying President Barack Obama and his family flies over a neighborhood of Havana as it approaches the runway to land at Havana's international airport, March 20, 2016.