Answer:
It means that for peace to reign, war is inevitable.
Explanation:
General Douglas MacArthur's Farewell Address speech which he gave on May 12, 1962, when he received the Sylvanus Thayer award was added with a quote from Pluto which says that "Only the dead have seen the end of war." means that for peace to reign, then war is inevitable and therefore continuous because peace is constantly threatened.
