Years ago when I was playing a browser game call Utopia where kingdom vs kingdom throw their resources at each other to gain more land/honor. One of the strategy people will do is FAKE war, because if 2 kingdom are at war with either other they can not be declared to war by other 3rd kingdom, so they will use this period of time to build up, chill and do anything BUT fight each other, since fake war is an agreement between players and is under the table of game design.
Back to AoC topic.... I was reading
https://ashes101.com/pvp#castles and read the following "If a Node survives a siege, it gains an immunity to further sieges for a period of ten times the declaration time." What is to stop 2 neighbor nodes to fake war each other to give themselves immune to war for X days from other sieges?
edit: add stuff.