WASHINGTON, August 13: U.S. intelligence officials are pretty sure North Korea can put a nuclear warhead on an intercontinental missile that could reach the United States. But experts aren’t convinced the bomb could make it all that way intact.

WASHINGTON, August 12:  No need to duck and cover just yet. While U.S. intelligence officials are pretty sure North Korea can put a nuclear warhead on an intercontinental missile that could reach the United States, experts aren't convinced the bomb could survive the flight to America.