That the Nobel Peace Prize is not a serious award should have been evident when Obama won it.
Henry Kissinger, 1973?
edit: I think Wilson (1919 Nobel; 1913-1921 presidency) is also a contender, if anyone has the patience/stamina to count all his conflicts and classify them. (I.e. what counts as "starting a war" and what's better described as a continuation of an existing conflict).
https://en.wikipedia.org/wiki/Presidency_of_Woodrow_Wilson#F...
> Hitchens presents Kissinger's involvement in a series of alleged war crimes in Vietnam, Cambodia, Laos, Bangladesh, Chile, Cyprus and East Timor.
They are tied for the record for number of nations they committed war crimes in. Although if you include CIA backed coups I think Obama pulls ahead.