What can be

Defense - "The action of defending from or resisting attack" - The need for defense is self evident on every level of existence.
Violence - "Behavior involving physical force intended to hurt, damage, or kill someone or something" - Sufficient control can eliminate violence in defense.
War - "A state of armed conflict between different nations or states or different groups within a nation or state" - Direct human participation can be limited to non-destructive war.

Hypothesis: Arrival of nuclear fusion energy, robotization and resulting abundance of resources will reduce economic reasons for war and allow for properly controlled warfare.

3 Component System

Conflict Prevention - prevent conflict by finding solutions that work for all involved parties

War Prevention - demonstrate mutual will to prevent war

Controlled Combat - control the use of force in combat

Demonstrate

Demonstrate forceful defense without violence
Show the will to prevent war
Demonstrate the ability to resolve tensions before they build into a crisis

Implement

1. Implement forceful defense without violence
2. Channel it towards fostering moral values
3. Reduce technological dominance in enforcement of non-violence

Details