Shouldn’t the singleton outcome be in the bottom right quadrant? If attack is easy but so is coordination, the only stable solution is one where there is only one entity (and thus no one to attack or be attacked.) If by contrast defense is easier, we could end up in a stable multipolar outcome… at least until coordination between those parties happen. Maybe singleton outcome happens in both coordination-is-easy scenarios.
Shouldn’t the singleton outcome be in the bottom right quadrant? If attack is easy but so is coordination, the only stable solution is one where there is only one entity (and thus no one to attack or be attacked.) If by contrast defense is easier, we could end up in a stable multipolar outcome… at least until coordination between those parties happen. Maybe singleton outcome happens in both coordination-is-easy scenarios.