The GDR changes the name of its currency from "Mark der Deutschen Notenbank" ("Mark of the German Central Bank") (MDN) to "Mark der Deutschen Demokratischen Republik" ("Mark of the German Democratic Republic") (M).
14 December
1967
In the Harmel Plan, the NATO council redefines the tasks of the Western defence alliance. The strategy of "flexible response" becomes the new NATO military doctrine.
