(CNN) -- President Barack Obama has said he doesn't believe North Korea can fit a nuclear warhead on a missile, casting strong doubt on an alarming assessment disclosed last week by the Pentagon's intelligence arm. And he warned the young North Korean leader Kim Jong Un that weeks of threats against the United States and South Korea had only served to isolate the regime further. CNN's full coverage on North Korea Asked in an NBC News interview whether North Korea could put a nuclear weapon on a ballistic missile, Obama said, "Based on our current intelligence assessments, we do not think that they have that capacity."
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Obama says Kim Jong Un is following familiar pattern of provocation
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He says intelligence suggests the North can't build a nuclear missile
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The North may make more provocative moves in the coming weeks, he warns
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North Korea has dismissed the idea of talks with the U.S. as "a crafty ploy"
A @placeholder foreign ministry spokesman on Tuesday dismissed the U.S. suggestion of talks as "nothing but a crafty ploy" to deflect blame for the rising tensions.