The North is believed to have produced enough plutonium at Yongbyon to make at least eight or nine nuclear weapons.

Greenpeace claim the ships' five-tonne cargo contains enough plutonium to make 50 nuclear weapons should it fall into terrorist hands.

In addition, Pyongyang has twice tested a nuclear device and may have extracted enough plutonium for six to eight bombs.

Their single five KT bomb contained at least enough plutonium for two critical masses, if brought together inside a good neutron reflector.

They said the North, which conducted its only nuclear test two years ago, has already produced enough plutonium for about six to eight bombs.

Pakistan is building a reactor that could produce enough plutonium for 40 to 50 nuclear weapons, the Washington Postreported today.

North Korea said this morning it had finished reprocessing some 8,000 spent fuel rods, generating enough plutonium for six nuclear weapons.

Enough plutonium to last centuries.