"fail-deadly" meaning in English

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  "lang_code": "en",
  "pos": "adj",
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        "In nuclear weapons strategy: encouraging deterrence by guaranteeing an immediate, automatic, and overwhelming response to an attack, even if the command-and-control infrastructure has been damaged by the enemy's first strike."
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          "encouraging",
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        [
          "deterrence",
          "deterrence"
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          "guarantee",
          "guarantee"
        ],
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          "immediate"
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          "automatic",
          "automatic"
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          "overwhelming",
          "overwhelming"
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          "response",
          "response"
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          "attack",
          "attack"
        ],
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          "command-and-control",
          "command and control"
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        [
          "infrastructure",
          "infrastructure"
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          "damage",
          "damage"
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          "enemy"
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          "first strike",
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        "(military) In nuclear weapons strategy: encouraging deterrence by guaranteeing an immediate, automatic, and overwhelming response to an attack, even if the command-and-control infrastructure has been damaged by the enemy's first strike."
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        "In nuclear weapons strategy: encouraging deterrence by guaranteeing an immediate, automatic, and overwhelming response to an attack, even if the command-and-control infrastructure has been damaged by the enemy's first strike."
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        "(military) In nuclear weapons strategy: encouraging deterrence by guaranteeing an immediate, automatic, and overwhelming response to an attack, even if the command-and-control infrastructure has been damaged by the enemy's first strike."
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