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During the course of the Lord of the Rings, many people suggest using the One Ring against Sauron, for example Boromir, who proposes using it to defend Gondor. Likewise, more knowing characters such as Gandalf and Elrond are diligent to explain that using the Ring against Sauron himself is foolish and destructive.
However misguided Boromir's ideas about the Ring may have been, I'm intrigued: How did he think the Ring would have helped him protect Gondor? How did Boromir envision using its powers?