A nuclear museum staffer cleans, 19 October the fi [Getty Images]

SAROV, RUSSIA: A nuclear museum staffer cleans, 19 October the first Soviet nuclear bomb, tested in 1949 in Sarov (behind sits the 1st thermonuclear bomb). Sarov, a town of some 84,000 inhabitants, surrounded by a tightly guarded no-man's- land with three barbed wire fences to keep the curious away from Russia's nuclear secrets, lies near the Volga city of Nizhny Novgorod, about 450 kilometers (280 miles) east of Moscow. (Photo credit should read ALEXANDER NEMENOV/AFP via Getty Images)

AFP ALEXANDER NEMENOV