Read the excerpt from President Roosevelt’s State of the Union address.I cannot prophesy. I cannot tell you when or where the United Nations are going to strike next in Europe. But we are going to strike—and strike hard.

Roosevelt admits he cannot predict where or when the United Nations will strike, but then confidently declares that they will strike hard. This contrast emphasizes the power and determination of the United States, so the purpose is to convince the public of America’s strength.

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