There are several factors that can increase the possibilities of war such as:
1. Military invasion
2. Continued ussuing of war-threats in the media/press
3. Testing and continued manufacturing of nuclear weapons.
4. Satism
5. Collectivism
6. Altruism
7. Mystricism
8. Evasion
9. Agency problems - where the incentives of the leaders differ from that of the population they govern.