Earlier, at a separate hearing in Congress, Mr. Clapper played down the latest spate of escalatory talk, suggesting it was bluster.

WSJ: Korean Nuclear Worries Raised

And in the story, I talk on the record with General Clapper, who at the time was the head of the Office of Intelligence for the Secretary of Defense.

NPR: Intelligence Failures In 'Top Secret America'

At a separate hearing in Congress, James Clapper, the director of national intelligence, played down the latest spate of escalatory talk, suggesting it was bluster.

WSJ: U.S. Says North Korea May Have Nuclear Missile