All it will take is one serious breakdown and that is the end of the nuclear industry. One terrorist bombing, one shipment of fuel diverted to a 'rogue state' one core containment 'event'.

You think so?

• One terrorist bombing outside a plant boundary would do roughly nothing.  Nuclear plants are very hard targets.  A bombing of a dry-cask fuel storage facility would scatter some stuff around and require folks to do some work with gamma cameras and whisk brooms.  This will probably be on the level of a chemical spill, minus the threat of seepage.
• PWR fuel is enriched to about 3.5% U-235.  It's useless for bombs without a lot more enrichment, and diverting it would be a big waving red flag.  Proliferators will start with yellowcake, like Iran.  Spent fuel is also useless for bombs; the Pu isotope mix is way wrong.
• We already had a core containment "event" in the USA.  Despite massive errors on the part of the operators, nobody was hurt; not even the pressure vessel was damaged.  Today's systems are even better.

I didn't mean to make this whole thread about nuclear, but we really do need to separate the facts from the propaganda.