North Korea may be capable of sarin-tipped missiles: Japan PM

Japan has asked for first strike capability a while ago.

This is what they should be really afraid of. ATS, North Korea Watch 2017: List of chemical, biological, and dirty bomb materials with fleet of 1,000 drones (with source link).

NK cannot launch ICBMs so the US is safe... for now. But a drone squadron carrying any or all can wreck havoc over South Korea and Japan.

And KJU is building a submarine construction facility. That would be really bad. They could launch their current missiles from subs lurking around the area.