Who said "Victory must be absolute—there can be no middle ground."?

This quote is attributed to Stannis Baratheon.

Victory must be absolute—there can be no middle ground. - Stannis Baratheon

"Victory must be absolute—there can be no middle ground."

Stannis Baratheon War

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"I am of the night."

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"Sometimes you have to become the monster to stop the monsters."

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"War teaches us the value of peace."