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A Cuban family in Havana, with a photo of legendary Argentine-Cuban revolutionary Ernesto "Che" Guevara on the wall, watch on TV the arrival of US President Barack Obama to Cuba on March 20, 2016, for a historic three-day visit to the communist-ruled island. On Sunday Obama became the first US president in 88 years to visit Cuba, touching down in Havana for a landmark trip aimed at ending decades of Cold War animosity. AFP PHOTO /Rodrigo Arangua / AFP / RODRIGO ARANGUA (Photo credit should read RODRIGO ARANGUA/AFP/Getty Images)

A Cuban family in Havana, with a photo of legendary Argentine-Cuban revolutionary Ernesto "Che" Guevara on the wall, watch on TV the arrival of US President Barack Obama to Cuba on March 20, 2016, for a historic three-day visit to the communist-ruled island.  On Sunday Obama became the first US president in 88 years to visit Cuba, touching down in Havana for a landmark trip aimed at ending decades of Cold War animosity. AFP PHOTO /Rodrigo Arangua / AFP / RODRIGO ARANGUA        (Photo credit should read RODRIGO ARANGUA/AFP/Getty Images)