统治者执行全境和平（英文：realm peace）将强制结束所有直属封臣间的战争。其通常用于防止封臣过于强大，或者为了解锁变更继承法。
封臣可以使用人情请求内阁投票全境和平。封臣也可以使用人情阻止全境和平在几年内被执行。
要求
御前会议DLC- 内阁必须被授权投票法律
- 内阁必须满意（最近没有发生继承或者违背内阁的暴政行为）
- The council must vote to approve enforcement (the ruler cannot bypass the council for tyranny on realm peace votes)
- Realm Peace was not started within the last 10 years (5 years of enforced peace followed by 5 years of cooldown)
效果
经过四个月需要确认的等待期，封臣之间的一切战争都会无条件和平（并非一定！）.
五年内，直属封臣不能互相宣战。此外，“附庸的附庸”不能发出派系的最后通牒，因为这也会导致内部战争。
正在发动内部战争的封臣会受有严厉的好感惩罚[只有进攻者？只有胜利？]。显示为“-40 暴君”，只适用于少数封臣，而不是如同实际的暴政作用于所有封臣。
Alternatives
If you can't or don't want to enforce Realm Peace for the entire realm, you can use other methods to intervene in specific wars between vassals.
- Pass laws prohibiting wars between vassals, with Imperial Administration
- Demand Peace interaction, with
The Reaper's Due - Revoke titles from one participant to weaken or even unland them
- Grant titles to one participant to strengthen them
- Force one of them to rebel against you, perhaps by excommunicating and arresting them
- Invalidate their CB by e.g. assassinating the claimant in a Claim war