Which term best describes the nation-state that functions as an arbitrator of disputes between other nation-states?

Question

Quizplus · Accepted Answer

The term "Keeper of the Balance" refers to a nation-state that acts as a mediator or arbitrator of disputes between other nations, ensuring that power is distributed evenly and that no one country becomes too dominant. This role is generally seen as one of maintaining stability and preventing conflicts from escalating.

Which Term Best Describes the Nation-State That Functions as an Arbitrator