Lithium 6 on Facebook Garage Sale Site...

From the New York Times:

WASHINGTON — The online ad reads like something only a metallurgist could love: an offer to sell 22 pounds of highly pure lithium 6 every month, set for delivery from the port of Dandong, China. 

But it caught the attention of intelligence agencies around the world for a simple reason: Lithium 6 offers a fast way to turn an ordinary atom bomb into a hydrogen bomb, magnifying its destructive power by up to 1,000 times. The seller listed in the ad — who even provided his cellphone number — was identified in a recent United Nations report as the third secretary in the North Korean Embassy in Beijing.