Fisher is credited with understanding the psychology of deterrence even though many of his policies remain open to criticism. A state should appear capable, dangerous, and willing enough that an opponent does not expect an easy military success. That threatening posture must be paired with an agreeable diplomatic representative who offers a peaceful alternative. The opponent can then choose negotiation without humiliation, while escalation leaves it facing the visibly formidable force. Deterrence in this account combines a credible military threat with a diplomatic route away from war.
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Jacky Fisher's two-part model of deterrence
Fisher's deterrence is described as a combination of conspicuous military danger and a diplomatic route that lets an opponent back down.