他的背叛导致整个行动计划失败。

His ___treachery caused the entire operation to fail.

他因背叛朋友而失去了所有人的信任。

He lost everyone's trust because of his ___treachery towards his friends.

他的背叛让整个团队陷入了困境。

His ___treachery left the entire team in a difficult situation.