Nudnik - n. U.S. colloq. Esp. in Jewish usage: a pestering, nagging, or irritating person
The bottom line is that, if the explosives were ever there, the Iraqis moved them before our troops arrived. There is no other plausible scenario.
Sen. Kerry knows this is a bogus issue. And he doesn't care. He's willing to accuse our troops of negligence and incompetence to further his political career. Of course, he did that once before.