1. Iranian religious leader   Ayatollah Ruhollah Khomeini   John F. Kennedy   Mikhail Gorbachev   Yasser Arafat   Hint Half-n-half Clue   2. leader of Soviet Union who succeeded Stalin   Fidel Castro   Nikita Sergeyevich Khrushchev   Nelson Mandela   Mao Tse-Tung   Half-n-half Clue   3. thirty-ninth President of United States of America   Leonid Ilich Brezhnev   Mao Tse-Tung   Frederik Willem de Klerk   Jimmy Carter   Half-n-half Clue   4. President of Soviet Union who ended Cold War   Ronald Reagan   Nikita Sergeyevich Khrushchev   Nelson Mandela   Mikhail Gorbachev   Half-n-half Clue   5. Chairman of Palestine Liberation Organization   Yasser Arafat   Henry Kissinger   John F. Kennedy   Fidel Castro   Half-n-half Clue   6. President of Cuban Republic   Ronald Reagan   Fidel Castro   Mao Tse-Tung   Leonid Ilich Brezhnev   Half-n-half Clue   7. President of South Africa who won the 1993 Nobel Peace Prize, which he shared with Frederik Willem de Klerk   Nelson Mandela   Helmut Kohl   Mao Tse-Tung   Leonid Ilich Brezhnev   Half-n-half Clue