WASHINGTON — The United States on Wednesday dismissed a claim by North Korea to have developed the ability to miniaturize nuclear warheads, but voiced concern Pyongyang was developing long-range missiles.
"Our assessment of North Korea's nuclear capabilities has not changed. We do not think that they have that capacity" to miniaturize weapons, a National Security Council (NSC) spokesman, Patrick Ventrell, told AFP.
North Korea ramped up its nuclear threats on Wednesday, boasting it had mastered the ability to deliver miniaturized warheads on high-precision long-range rockets.
Reducing the size of a nuclear warhead to the point where it can fit on a long-range missile would be a major leap forward in offensive capability, and Pyongyang has claimed progress with miniaturization before.
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