E.g. Charles de Gaulle or Ronald Reagan (9)
(Other definitions for president that I've seen before include "club official" , "2's official title" , "Top person" , "such as Bush" , "US leader" .)
(Other definitions for airport that I've seen before include "O'Hare or Kennedy, say" , "Travel terminus" , "Aviation centre" , "Charles de Gaulle, for instance" , "Fliers' terminus" .)