What peace research actually shows

Peace research has matured into a serious empirical field over the past 40 years. Some findings are surprising. Here is a curated overview of robust results from peer-reviewed work.

1. Negotiated agreements last longer than military victories — sometimes

Across roughly 300 post-1945 internal conflicts catalogued by the Uppsala Conflict Data Program, agreements with strong third-party guarantees lasted on average 12 years. Military victories often "resolved" conflicts faster but had higher long-term recurrence (~46% within 10 years) when underlying grievances remained unaddressed.

2. Inclusive processes outperform top-down deals

Christine Bell and Jamie Pospisil have documented that peace agreements involving civil society and women's groups in formal negotiations were 35% more likely to be implemented and 15 years more durable on average.

3. Economic interdependence reduces — but does not eliminate — interstate war

The classic Russett-Oneal "democratic peace plus trade" findings hold under updated 2020s data, but with weaker effect sizes than in the 1990s literature. Trade dependency does not stop wars when nationalist mobilization is strong.

4. Local power-sharing works when it includes accountability mechanisms

Pure ethnic power-sharing (consociational democracy) without independent judiciary and minority rights tends to freeze conflict rather than resolve it. The cases of Lebanon and Bosnia are widely cited examples of partial success and partial stagnation.

5. Mediators with prior credibility on both sides finish faster

Norwegian mediation in the Oslo Accords, the Vatican in Cuba-US rapprochement, Qatar in regional disputes — track records show mediators trusted by both parties cut negotiation time by 30–50% on average.