Congressional red team discovers that it's (still) trivial to acquire all the materials for a dirty nuke

In 2014, undercover Congressional investigators set out to test the countermeasures put in place to test the regulatory system that is supposed to detect and interdict terrorists who are assembling a dirty bomb -- countermeasures set in place after a red team found that it would be easy to do just that in 2007. They found that it was still very easy to beat all the detection systems. (more")