The Democratic presidential hopeful defended his 1985 remarks praising some of Fidel Castro's socialist policies.
A magnitude 7.7 earthquake hit south of Cuba and northwest of Jamaica.
Ousting Venezuelan leader Nicolás Maduro is Trump's dream and NSC official Mauricio Claver-Carone is eager to make it come true.
The country has not had a prime minister since 1976 when Fidel Castro vacated the role and was named Cuba's president.
While more than half of Americans rejected socialism in a recent Gallup poll, 43% surveyed said some version of it would be good for the country.
Relations between the U.S. and Cuba have deteriorated under President Donald Trump in part because of Cuban support for the embattled president of Venezuela.
The sanctions now include banning tourist travel. Cruise lines that had stopped at the island are now scrambling to change plans.
Cruise ship and other leisure travel to the island is banned over the Cuban government’s support of Venezuela's leader.
At least three activists were arrested for the march.
Over 600 migrants fled from a Mexican detention center in one of the largest mass escapes ever.