Furthermore, to judge from the reports that have been written about a global black market in fissile materials, perhaps you could sit on the periphery — say in Istanbul — and with relatively little risk allow the uranium to come to you.
And, Paula, this is a much, much, much greater threat than any threat from an ICBM missile and there's an awful lot of this what they call, the scientists call fissile material, the material that makes a nuclear explosion.
What intelligence analysts think is more likely is what's called fissile or a dirty bomb, which would using radioactive material that would not create a nuclear explosion, but there would be a explosion that would spread radioactivity over an area and make it uninhabitable for several years.
The term 'nuclear materials' (also known as fissile materials) refers to the substances which, by undergoing rapid nuclear fission, provide the explosive energy of nuclear weapons.
In May 2009 the United Nations 'Conference on Disarmament agreed to hold talks on an international treaty to ban the production of fissile materials for nuclear weapons, generally referred to as a fissile material cutoff treaty.
In addition to HEU and plutonium, neptunium-237, americium-241, americium-243, and any other fissionable isotope suitable for the manufacture of nuclear weapons are classified as fissile materials in the IPFM draft treaty.
The world has a huge surplus of the exotic, manmade heavy metals known as fissile materials, whose chain-reacting atoms have been the core of nuclear bombs since Hiroshima and Nagasaki.
A so-called fissile cut-off agreement is widely regarded as the next achievable step towards ending the threat of nuclear war and a recent breakthrough had appeared to clear the way for negotiations to begin in the next few months.
Only 0.7% of natural uranium is "fissile", or capable of undergoing fission in a normal reactor.
If the spallation target is surrounded by a blanket assembly of nuclear fuel, such as fissile isotopes of uranium or plutonium (or thorium capable of breeding uranium-233), there is a possibility of sustaining a fission reaction.