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Cuba's First Vice-President Miguel Diaz-Canel queues at a polling station in Santa Clara, Cuba, during an election to ratify a new National Assembly, on March 11, 2018. 
Cubans vote to ratify a new National Assembly on Sunday, a key step in a process leading to the election of a new president, the first in nearly 60 years from outside the Castro family. The new members of the National Assembly will be tasked with choosing a successor to 86-year-old President Raul Castro when he steps down next month.
 / AFP PHOTO / POOL / Alejandro Ernesto        (Photo credit should read ALEJANDRO ERNESTO/AFP/Getty Images)
Cuba's First Vice-President Miguel Diaz-Canel queues at a polling station in Santa Clara, Cuba, during an election to ratify a new National Assembly, on March 11, 2018. 
Cubans vote to ratify a new National Assembly on Sunday, a key step in a process leading to the election of a new president, the first in nearly 60 years from outside the Castro family. The new members of the National Assembly will be tasked with choosing a successor to 86-year-old President Raul Castro when he steps down next month.
 / AFP PHOTO / POOL / Alejandro Ernesto        (Photo credit should read ALEJANDRO ERNESTO/AFP/Getty Images)

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The challenges facing Cuba's likely new leader

CNN's Patrick Oppmann reports on the man expected to be the next leader of Cuba, Miguel Diaz-Canel, and the challenges facing the country.

The challenges facing Cuba's likely new leader

CNN's Patrick Oppmann reports on the man expected to be the next leader of Cuba, Miguel Diaz-Canel, and the challenges facing the country.