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is they think the Americans might attack them,
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and they worry that the Americans might attack them
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thinking that they won't retaliate,
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because they won't really have any incentive to retaliate
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once their cities are destroyed.
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So they construct a device they called the doomsday device
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that will automatically launch nuclear missiles
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back on the Americans if the Russians are attacked.
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It's a commitment device to make it credible
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that they will actually respond were they to be attacked
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by the crazy Americans.
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So there's a mistake, however, that the Russians make.