In a Sept. 20, 1960 photo, Cuban leader Fidel Castro, left, and Soviet leader Nikita Khrushchev hug at the United Nations. As Castro celebrates his 90th birthday on Aug. 13, 2016, hundreds of thousands of Cubans are running private businesses, buying and selling their homes and cars and checking the internet on imported cell phones. Tens of thousands of Cubans are emigrating to the United States, hollowing out the ranks of highly educated professionals. (AP Photo/Marty Lederhandler)