Is there any way to stop vassals from declaring war on someone else without your permission?

[Avada Kedavra 1]

I basically never vassalize countries when I play because, sooner or later, even the smallest of my vassals will declare war on another country and I'll have to invade it to stop the war, or pay it off. This is a real shame, as some of my more ridiculous games include large "alliances" of puppet states led by a great power (me), that are then liberated at will for me to go to war with again if I wish to do so. 

 

Is there any way to limit vassals' declarations of war? If not in-game, what adjustments would I have to make to make it impossible for a vassal to declare war, and only allow it to join wars if I ask them to?

 

Any help is greatly appreciated

Edited March 30, 2022 by Avada Kedavra

[AlbertArmenia 61]

Unfortunately no. You can try changing code though

[Avada Kedavra 1]

On 4/1/2022 at 6:12 PM, AlbertArmenia said:

Unfortunately no. You can try changing code though

Any clue as to how I'd be able to?