Colonial Border Conflict

Sigh... Where to begin? It seems that settlers from Colonial Conflict Target have ventured into Colonial Conflict Source in search of new land and resources. Colonial Conflict Source then sent their militia to drive them out, but they got overzealous and pursued the settlers back into Colonial Conflict Target, raiding and burning the settlements there. The conflict then escalated when Colonial Conflict Target sent their militia to drive out the Colonial Conflict Source Adjective militia and carry out raids of their own into Colonial Conflict Target.
The Colonial Conflict Source Ruler Title of Colonial Conflict Source, is blaming the Colonial Conflict Target Ruler Title of Colonial Conflict Target, and vice versa. How do we resolve this conflict without losing face?
Event chain
Each event is fired by the one it is nested under; the line below it says which choice leads there and when.
Colonial Border Conflict
Colonial Border Conflict↳ Option A “Send the local militia to drive them out!” · right away
Colonial Border Conflict↳ Option A “Send in our local militia as well!” · 120 days later
Colonial Border Conflict↳ Option A “Send in our local militia as well!” · 120 days later
Colonial Border Conflict↳ Option B “Reprimand those that escalated the conflict!” · right away
Colonial Border Conflict↳ Option B “Reprimand those that escalated the conflict!” · right away
Colonial Border Conflict↳ Option C “Reprimand those that started the conflict!” · right away
Colonial Border Conflict↳ Option C “Reprimand those that started the conflict!” · right away
Definitionin_game/events/colonization/conquest_of_paradise.txt:122
The Colonial Conflict Source Ruler Title of Colonial Conflict Source, is blaming the Colonial Conflict Target Ruler Title of Colonial Conflict Target, and vice versa. How do we resolve this conflict without losing face?