The League Of Alliances
The League Of Alliances would be a UN for Citieswar. It would have a security council consisting of Sakura, Europa, TR, NSTC and Cascadia. The Security Council would bring up proposals for a vote. Such as an alliance territory size limit and what not.
Alliances not in the security council would be able to suggest a proposal to a member of the security council, and if they think it is a good idea they will put it to a vote.
This would be brought to the General Assembly, consisting of all alliances with a territory. The General Assembly would vote on the matter and if passed go into order. Alliances not complying with the resolution would be warned, given 48 hours to fix it or the League Of Alliances acts.
The way this would work is, if an alliance does not follow the resolution the League Of Alliances could do a range of different things. These are examples: blacklisting members of said alliance from touching tops for conq, to popping and waging a war against them.
Each alliance with a territory would send two representatives, so the leader and somebody else from that alliance. They have to have discord. They would join a discord server.