I don't think war is important unless another country wants to start one, then i think it is important to try and win, so that the country wanting to war knows not to mess with your country. but i don't believe that someone should go looking to start a war whenever it is unnecessary.
Hope i helped. -Sheckelstein.
What motivates Antigone to defy Creon's decree by burying her brother is divine authority. She thought it was not Creon's authority to give such a decree when there are divine laws that are stronger than human laws.