  The Super-bomb issue contained two problems: feasibility of physical
engineering and political need to get H-bomb ASAP. And there were two radically
different assessments of these problems by outstanding physicists Hans Bethe
and Edward Teller, connected by many years of personal friendship and engaged
in the US nuclear project from the very beginning, as the head of the
Theoretical Division at Los Alamos and the leading figure in thermonuclear
research. This puzzle is solved by using the history of the Soviet H-bomb, in
particular the declassified documents on the role of Klaus Fuchs.
