Which tactic is based on the belief that the threat of retaliation can prevent enemy attacks?

The belief that the threat of retaliation can prevent enemy attacks aligns closely with Deterrence Theory. This concept is rooted in the idea that if a state possesses the capability to respond decisively to an act of aggression, the potential adversary will be dissuaded from initiating conflict. Deterrence relies heavily on the perception of strength and the certainty of consequences for any hostile actions, emphasizing the psychology of fear and caution in international relations.

In contrast, Defense-in-Depth primarily focuses on layering defenses to absorb and delay attacks rather than deterring them through threats. An Offensive Strike involves proactive measures to attack the enemy, which does not primarily depend on the threat of retaliation to achieve its objectives. A Mutual Defense Pact, while it may support deterrence, refers specifically to agreements between nations to defend one another, which is distinct from the broader concept of deterrence that centers on the threat of punishment to maintain peace.