Suitcase Nuclear Bomb Unlikely to Exist

Then House Armed Services Committee staff member Peter Pry displays a model of what a nuclear suitcase bomb "might look like" during a hearing on Capitol Hill in Washington in this Oct. 26, 1999 file photo. Hollywood has made TV shows and movies about the devices and the Federal Emergency Management Agency has alerted Americans of the threat - information that the White House redistributes on its web site. But government experts and intelligence officials say such a threat gets vastly more attention than it deserves. (AP Photo/Dennis Cook, File) (Dennis Cook - AP)

Naysayers noted that he was never able to pinpoint any specific location.

In a 2004 interview with the Kremlin's Federal News Service, Colonel-General Viktor Yesin, former head of the Russian strategic rocket troops, said he believes that Lebed's commission may have been misled by mock-ups of special mines used during training.

Yesin believed that a true suitcase nuke would be too expensive for most countries to produce and would not last more than several months because the nuclear core would decompose so quickly. "Nobody at the present stage seeks to develop such devices," he asserted.

Some members of Congress remained convinced that the suitcase nuke problem persists. Perhaps chief among these lawmakers was Curt Weldon, a GOP representative from Pennsylvania who lost his seat in 2006.

Weldon was known for carrying around a mock-up of a suitcase nuke made with a briefcase, foil and a pipe. But it was nowhere near the weight of an actual atomic device.

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THE SCIENCE

Majidi joined the FBI after leading Los Alamos National Laboratory's prestigious chemistry division. He uses science to make the case that suitcase nukes are not a top concern.

First, he defines what a Hollywood-esque suitcase nuke would look like: a case about 24 inches by 10 inches by 12 inches, weighing less than 50 pounds, that one person could carry. It would contain a device that could cause a devastating blast.

Nuclear devices are either plutonium, which comes from reprocessing the nuclear material from reactors, or uranium, which comes from gradually enriching that naturally found element.

Majidi says it would take about 22 pounds of plutonium or 130 pounds of uranium to create a nuclear detonation. Both would require explosives to set off the blast, but significantly more for the uranium.

Although uranium is considered easier for terrorists to obtain, it would be too heavy for one person to lug around in a suitcase.