[tacticalogic]

I don't think a fission bomb is all that hard to build, once you have enough of the right kind of fissionables.

Building a working fusion (thermonuclear) bomb seems to be considerably more complicated.

[The Great RJ]

The enriched uranium fission bomb is not all that difficult to produce. The Hiroshima bomb, Little Boy, was a uranium fission device and Manhattan Project scientists were so confident the design would work that it was dropped untested. The Little Boy bomb used a section of a naval cannon and fired a sub-critical slug of enriched uranium into another piece of uranium to achieve the critical mass needed for a nuclear chain reaction. Bombs using Plutonium require a more complex implosion form of detonation.