Photo Gallery Searching for Deterrence

During the Cold War, peace in Europe depended largely on mutual deterrence. Since the collapse of communism, however, Western militaries have changed focus. The Ukraine crisis has some wondering if that was a mistake.
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Foto: Maurizio Gambarini/ dpa
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Foto: INA FASSBENDER/ REUTERS
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Foto: Virginia Mayo/ AP/dpa
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Foto: LAURENT DUBRULE/ REUTERS
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Foto: VALENTYN OGIRENKO/ REUTERS