Nahum was written about 150 years after Jonah and deals with the destruction of Nineveh. Although Nineveh repented under the preaching of Jonah, the city turned back to its wickedness.
Outline:
I. Destruction of Nineveh Declared (1)
Il. Destruction of Nineveh Described (2)
Ill. Destruction of Nineveh Defended (3)