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,
Vietnam,
Korea,
Iraq, 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.