. >>> joining me is david smirler. thank you for joining us. >> thanks for having me on. the defense intelligence agency has warned president trump that north korea could master the technology to deliver nuclear weapons targeting the u.s. within a year. based on your research, how reel is the threat that those weapons could reach california and other parts of the west cost? >> north korea is saying they have the capability as early as last year and they showed a series of signs and tests that would be supportive of the assessment. >> the number i've seen thrown out is these missiles could have a range of 6,500 miles, if that's true it puts california but also possibly denver and chicago in range, is that correct. >> that's right. the last test on the 28th of july indicated the one they launched on the fourth of july had significantly longer range. >> so having the capability is one thing, using it is another. what are the chances you think north korea would launch a nuclear strike against the u.s. >> north korea developed its program to fend off conventional conflict on t