FILE – In this Oct. 3, 2017, file photo, tourists ride classic convertible cars on the Malecon beside the United States Embassy in Havana, Cuba. Doctors treating the U.S. Embassy victims of mysterious, invisible attacks in Cuba have discovered brain abnormalities as they search for clues to hearing, vision, balance and memory damage, The Associated Press has learned. Physicians, FBI investigators and U.S. intelligence agencies have spent months trying to piece together the puzzle in Havana, where the U.S. says 24 government officials and spouses fell ill starting last year in homes and later in some hotels. (AP Photo/Desmond Boylan)
FILE – In this Sept. 12, 2017, file …
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