300px-north_korea_1996_cia_map.jpgThis can't be good.

BEIJING, China (CNN) — Senior North Korean officials say the communist regime has "weaponized" its stockpile of plutonium, according to a U.S. scholar, in a move suggesting that North Korea may have significantly hardened its stance on nuclear negotiations.

Selig Harrison, one of the few U.S. scholars granted access to senior North Korean officials, said at a news conference in Beijing that the officials told him they had weaponized 30.8 kilograms of plutonium, enough for four or five warheads.

When asked what exactly this means Harrison replied, "It does change the game."