Nothing fueled the Cold War more than fear of the Hydrogen Bomb. Though President Kennedy halted above-ground, atmospheric testing of these weapons in 1963 like those that yielded these explosive images, thousands remain on high alert today. “One nuclear weapon exploded in one city — be it New York or Moscow, Islamabad or Mumbai, Tokyo or Tel Aviv, Paris or Prague — could kill hundreds of thousands of people,” President Obama said in Prague on April 5, 2009. “And no matter where it happens, there is no end to what the consequences might be — for our global safety, our security, our society, our economy, to our ultimate survival.”

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