North Korea’s second intercontinental ballistic missile (ICBM) flight (Hwasong-14, on July 28 2017), demonstrating an even longer-range capability than the previous one  on July 4, caused great joy in Pyongyang and trepidation in the West.

The first flight, which reached an altitude of “only” 2800 km, left some doubts whether the missile could hit major U.S. cities.

Just three weeks later the answer became clear: the flight time was considerably longer and the peak altitude was 3700 km, dispelling all doubts about the threat to major U.S. cities on the West Coast and perhaps as deep inland