Cubans sitting beneath a poster of “The Cuban Five” applaud after Cuban President Raul Castro announces the re-establishment of official diplomatic relations with the U.S. in a televised speech, Havana, December 17, 2014. Sven Creutzmann / Mambo Photo / Getty Images

Women with posters of the Cuban Five celebrate their release. The five men, regarded as heroes in Cuba, were convicted of spying by the U.S. and imprisoned in 2001. The last three behind bars were swapped for U.S. contractor Alan Gross as part of the deal to normalize relations between the two countries. Ramon Espinosa / AP

Cuban school kids watch a live broadcast of the speech by Cuban President Raul Castro about the re-establishment of official diplomatic relations with the U.S. Their classroom also has a poster of the Cuban Five. Sven Creutzmann / Mambo Photo / Getty Images

A man buys herbs from a street vendor holding a newspaper clipping urging President Obama to release the Cuban Five, December 17, 2014. Sven Creutzmann / Mambo Photo / Getty Images

A Cuban man reads the Granma, a Cuban Communist party paper, as he has his shoes shined, shortly after the announcement of normalized relations. Sven Creutzmann / Mambo Photo / Getty Images

A Cuban man carries food up a stairway under an excerpt of a speech of Cuba's former leader Fidel Castro, shortly after the broadcast announcing the deal. Sven Creutzmann / Mambo Photo / Getty Images

A tourist has his picture taken next to a statue of American writer Ernest Hemingway at the Floridita bar in Havana, Cuba, Wednesday, Dec. 17, 2014.

A vintage American car, a common sight in Cuba, passes the building housing the US Interests Section in Havana, which has served as the informal embassy since diplomatic relations were broken off a half century ago.