Harry Truman actually said...
It is my firm belief that the expansion of the North Atlantic Treaty at this time to include Greece and Turkey--two countries which have been collaborating so effectively with the other members of the free world in building the structure of peace--is a requisite step in the furtherance of the Treaty's objectives.
Context
Special Message to the Senate Transmitting Protocol to the North Atlantic Treaty on the Accession of Greece and Turkey
01/09/1952