It's not a bomb it's not even the blueprints of something which
> might turn into a bomb. It's closer to the aspiration to build a bomb
> which they now need to workout how to build and deliver.
Also, given the number of other similar projects that have fizzled, it is roughly equivalent to calling the fire marshal in WW2 Dresden and threatening to drop one, or possibly as many as several lighted matches over the city.