North Korean Missile Test Crashes Shortly After Launch
It is important to remember that the North Koreans assuming they have the proper instrumentation can still learn a lot from a failed test to help improve whatever system they were testing:

North Korea fired an apparent ballistic missile Wednesday, but the launch appears to have ended in a failure, South Korea’s military said.
The North shot the projectile from the Sunan area in Pyongyang at around 9:30 a.m., according to South Korea’s Joint Chiefs of Staff (JCS). It did not elaborate further, only saying an additional analysis is needed.
The missile appears to have exploded in midair at an altitude of below 20 kilometers, informed sources said later.
“At this point, our assessment is that the projectile launch appears to have been botched as it failed to reach a certain altitude in its early boost phase,” a JCS official told reporters on condition of anonymity.
Military authorities are putting weight to the possibility the latest launch involved the same intercontinental ballistic missile (ICBM) that the North tested on Feb. 27 and March 5.
Yonhap
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As you said, GI.
IIRC, Thomas Edison said something about having no failed experiments, just learned 9,999 ways not to make a lightbulb…
A perfected Nork ICBM is not something anyone should desire. And you can bet the Nork parents with children crying from hunger and malnutrition are not very interested in Kim Fatty spending so much on weapons while so many starve.