WASHINGTON (AP) - Experts say North Korea is probably years away from perfecting the technology to back up its bold threats of a pre-emptive nuclear strike on America, but some aren't sure about nearby targets like South Korea and Japan.
David Albright at the Institute for Science and International Security assesses that the North could put a nuclear warhead on an 800-mile-range missile. But scientist Siegfried Hecker who has had unusual access there, says it is unlikely and nobody outside of a small elite would know.
The bottom line is that no one can say with certainty how much technological progress North Korea has made. Even if it has the capability, it's unlikely Pyongyang would use it because the retaliation would be devastating.