Don’t stop the panic

The latest on the Iranian uranium saga is that they don’t need to process it to atomic bomb standard. The panic-mongers have come up with a dirty bomb scenario.
    That’s a mixture of conventional explosive and any old radioactive material. The bang of the bomb would cause panic and removing the radioactive contamination would paralyze a large area of a city for months? More?
    A Weapon of Mass Disruption rather than Destruction.