Detailed text transcripts for TV channel - CNN - 20170905:05:44:00
Missile program that caught the world offguard. >> these are startling developments in a short period of time that we're measuring in terms of weeks rather than in terms of a year time span. >> reporter: north korea has increased the strength of its nuclear bomb blast over the last decade from about a thousand tons of tnt to 10,000 tons last year at this time, to sunday's test, estimated at 50 to 120,000 tons of tnt. that means it could be three to eight times stronger than the bomb dropped on hiroshima. over the past year, expert says kim jong un has accelerated his most lethal capabilities a...