Often diplomacy is the art of convincing great houses that they don't actually have to fight to the last man and absolutely exterminate one another. This skill also represents an understanding of the nuances and political goals of different forces throughout Arvum.
0: People waving their swords angrily around at each other probably aren't friends. Maybe. Unclear. Should they demand the respect they deserve?
1: Whoa yeah they definitely hate one another, and demanding respect is stupid.
2: Because they are ancestral enemies with a long standing blood feud.
3: That started due to their relations with these other houses and ties by blood.
4: And due to these complex competing goals among their different vassals and regional strife.
5: That is further complicated by the different individual leaders you are all familiar with.
6: And know how to convince to solve this.