Open Source Solution to War

In order of priority:

1. Prosperity, so that resource conflicts are avoided. Mutually assured abundance.
2. Education - teaching people how to think, so they are not manipulated. Teach ethics, personal and political transformation as a core in anyone's life.
3. Elimination of nuclear arms
4. Open source economy

Potential crisis-point solutions if the above doesn't work:

1. Mass mobilization and construction of defensive technology through crowdsourced means - it is an idea but can be problematic.
2. Donating military equipment to countries under attack, such as Ukraine 2022.
3. Sanctions - but for real. Excommunicating offenders from the global community.
4. Funding paramilitary assistance. But mercenaries are not a pretty thing - see more about the modern mercenary at [1]
5. Cyberwarfare