A car drives past the building of the the U.S. diplomatic mission in Cuba, The U.S. Interests Section, (USINT), in Havana, in this September 12, 2013 file picture. Cuba has released American aid worker Alan Gross after five years in prison in a reported prisoner exchange with Havana that the United States said on Wednesday heralds an overhaul of U.S. policy toward Cuba. REUTERS/Desmond Boylan/Files (CUBA – Tags: POLITICS TRANSPORT BUSINESS)