Short answer: no with a 'but'
long answer yes with an 'and'
Short: "no, but there will be more wars, but not necessarily a World War"
Long: "Yes. the nature of humanity, derived from their history of warring: (American Revolutionary War
, War of 1812
, The War of conguest waged by the great leader of the Mongols, Genghis Khan
, World War I
, World War II
, and that's just naming ones the US had prominent involvement in) dictates that there WILL likely be a World War III. Perhaps not in our lifetimes, but it will happen eventually.