Cooldown for war declaration

Lately I've been abusing the ultimatum/AI persona that always refuse demand. Basically All you need to do is beat them in war, make sure there's at least one army in your border, send demand, and AI refuse/send ultimatum, they'll most likely refuse. Then war continues but they're most likely will be at 0 war support so you can just take all their teritories in a bunch of 1 turn war. That's why I propose two solutions:

1. Add "peace treaty" status that prevent war between two nations for 5 turns. you can pay influence during peace force demand to extend the peace period.

2. Immediately kick all army to friendly teritory after war. As added benefits this also prevent your unit to get stuck in between district and die slowly if your unit got pushed from their district after peace.