If you will notice, this announcement just happens to coincide with Rice`s Euro tour which was based mainly on the discussion of Iran`s nuclear capabilities.
Every time there is any reference to nuclear anything North Korea jumps up and shouts "we have it, we have it".
It`s bascialy another sad attempt to weasel money, goods or services from the U.S.
North Korea is a joke. They have nothing left in their tin can so they put two rocks in and rattle it as loudly as possible.