For one, U-238 is not stable. It is a radioactive isotope of uranium that is found naturally and comprises approximately 99.284% of uranium's mass. While U-235 is fissile (at .711% of mass - the remainder is U-234), U-238 is a neutron absorber (which creates Np and then Pu-293) and is fertile. Naturally the resulting PU-239 can be used in a fast reactor - or for constructing a Pu-based weapon.
Secondly, small, high power reactors may be constructed with very high concentrations of U-235, unlike what is suggested in the article - and they're not bombs.
Reactors can be built from natural uranium, low enriched uranium, highly enriched uranium, and other fuels. Canada uses heavy water and natural uranium for their implementation - avoiding the enrichment process but requiring the heavy water "enrichment" process. Most commercial US reactors use low enriched uranium (3-5%). Fast reactors like the French Phenix use plutonium - although almost every standard commercial reactor acquires a good portion of its energy from plutonium fission at the end of its fuel cycle life due to the U-238 + neutron -> Pu-239. With that said, if they go above 10% or so U-235 enrichment, they're heading to uranium bomb material.
We - and/or Israel have time to take the facility out after the election - as long as they don't have the material already enriched. It will be a mess though between the U and if the F is stored in gas form nearby.
I look forward to it.
U 238 + Neutron = U 239
You need to add a Proton to U 238 to make Pu 239 +1. Add an electron too to balance the charge.