Searching through the large literature on conflict and peace studies, I find very little mentioning of psychological mechanisms behind bellicosity, radicalization, and escalation versus peacefulness.
In a recent paper, I have argued that a better integration of social psychology and evolutionary psychology into conflict studies can improve our understanding of the root causes of violent conflicts and contribute to more effective peacemaking.
This paper presents several psychological theories that may benefit conflict and peace research. See: https://www.researchgate.net/publication/379929325
Your comments are welcome.