Policies represent a general attitude from one Clan towards another. In Khan Wars, just like in the real world, there are two Policies - War and Peace. Two Clans cannot be in War and Peace at the same time.
Each Policy lasts for 1, 2, 4, or 8 weeks depending on the member declaring the Clan’s Policy. When an end day is set, it cannot be changed until the time expires.
Every Clan can declare their Policy towards any other Clan.
In the Clan info there is a page for full info about the Clan's policies.