Debates on whether intelligence reports were really important for the Soviet H-bomb project have flared up more than once both in the West, since Klaus Fuchs was arrested and brought to trial in Britain in 1950, and in this country since the end of the past decade. The subjects they involved have ranged widely - from the alleged value of direct information gathered by agents to speculation that Soviet nuclear scientists may have gleaned useful 'prompts' from air samples gathered after US nuclear tests.
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