"Keith Willshaw"
What's the source of the material that the north koreans are using to
make
their nukes. Does it come from their own reactors? It's being described
in
the press as "reprocessed nuclear fuel rods". Are they getting the stuff
from sources in the west ?

Is there any external radiation from a nuclear weapon or warhead?
Plutonium must emit some radiation, how is this shielded? I would think
lead would work but would be very heavy negating the transportation of say a
suitcase nuclear device. What about depleted uranium? I think this may be
like beryllium. Not dangerous unless ingested.