God tells Jonah to go to Nineveh, capital of Assyria, and tell the people to repent or He will destroy them. Jonah keeps refusing and escaping, but God steers him back to his mission every time. Finally he warns Nineveh and they repent, so God spares them.
Jonah is displeased and wishes he were dead!
O Lord, take away my life, for it is better for me to die than to live. [Jonah 4:1-3]
Why? Is it because Assyria was the cruel warlike enemy of Israel and Jonah wanted it destroyed? Or because Jonah did not believe in repentance and wanted Nineveh destroyed for their misdeeds? This would explain his reluctance to take on the mission in the first place.
Is this discussed anywhere?