It would be good to have a system implemented so that the when you declare war it costs a certain amount of coins to start the declaration and a weekly maintenance amount.
The system could use a new totem "War Totem" to manage war declarations or using the existing standings screen.
Wars cost money, having to spend money to start and maintain improves the balance and makes wars more justified. I would like to propose that a war declaration start at 1 gold coin to start and 1 gold coin per week RL to maintain. If the fee isn't paid for the week, the war declaration will automatically drop.
Please see the suggestion I posted and vote if you like this idea
https://lifeisfeudal.com/Discussions/question/war-declaration-costs-coin