Kim Jong-un's failed missile test on April 28 a year ago was barely acknowledged by the U.S. after it crashed shortly after launch.
One of North Korea's test ballistic missiles previous year crashed in a city not far from Pyongyang, according to new findings by online news magazine The Diplomat.
North Korea is reportedly in the early stages of testing another intercontinental ballistic missile, only a month before the South will welcome countries from across the world for the Winter Olympics.
The blast from missile had caused a significant damage to a complex of industrial or agricultural buildings, The Diplomat magazine reported, citing a U.S. intelligence source alongside satellite imagery.
The April 29 launch was also unsuccessful due to engine failure, reaching only about 44 miles in maximum altitude before crashing back to Earth.
Satellite imagery scanned by the authors shows damage to industrial or agricultural buildings near a residential area.
However The Diplomat said it was impossible to ascertain whether there was any loss of life.
These included "ground disturbances in an area that previously contained a building with fencing" and damage to a greenhouse on the complex.
Liquid-fuel missiles like the Hwasong-12, which use a highly volatile combination of hypergolic propellant and oxidizers, can produce massive explosions depending on the exact nature of their failure. "A slight difference in trajectory may could have resulted in an even more catastrophic accident over a populated region".
Dr Baker, an adviser to Reagan during the Cold War, claimed North Korea is taking "considerable" risks, which could see a missile veering off course and hitting the wrong target.
Fresh UN sanctions and ongoing North Korea missile tests have ratcheted up already high tensions between the hermit nation and the US.
Since the earliest days of ballistic missiles by Nazi Germany in World War II, the most unsafe moments in missile tests and firing are the launch and immediate post-launch phases.
North Korean leader Kim Jong Un inspects the long-range strategic ballistic rocket Hwasong-12 (Mars-12) in this undated photo released by North Korea's Korean Central News Agency (KCNA) on May 15, 2017.