This survey summarizes the classical fundamentals of modern deterrence theory, covers major theoretical and empirical findings on the impact of certainty and severity of punishment (and the interplay thereof) as well as underlying methodological problems, gives an overview of limitations and...

This paper surveys some of the strategic aspects that emerge if players fight in an alliance against an enemy. The survey includes the free-rider problem and the hold-up problem that emerges in the baseline model, the role of supermodularity in alliance members' effort contributions, the role of...