The Soviet Union tested its first atomic bomb in 1949, four years after the United States. It was the first to test a hydrogen bomb in 1953. Russian media and historians have launched a public debate on whether the Soviet Union stole basic technology from the United States. Reuter
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Moscow - President Boris Yeltsin yesterday ordered the publication of top-secret archive documents on the former Soviet Union's early nuclear programme. His press office said Mr Yeltsin signed a decree ordering the preparation and publication of an official collection of documents dating up to 1954. It was unclear when the material would be published, or how many documents would be released.