WASHINGTON (Reuters) - North Korea is likely able to mate a miniaturized nuclear warhead to a missile but is still struggling with missile re-entry technology necessary for longer range strikes, a senior U.S. military official said on Thursday.
"I think they could mate a warhead with a delivery device. They're just not sure (about) re-entry," said the official, speaking to reporters on condition of anonymity.
"They're endeavoring to overcome that."
(Reporting by Phil Stewart; Editing by Chris Reese)