During Tuesday morning, the dictatorship sent a medium-range robot, which was also the first in years to fly over Japan.

Together with South Korea and the United States, Japan conducts several military exercises.

Tuesday morning's postponement can be seen as North Korea's reaction to these.

- Most of these launches can be derived from some kind of military exercise either in the South China Sea or in the Sea of ​​Japan near South Korea, says Bergsten.

In the past week alone, North Korea has sent off four robots, most of them short-range robots.

Tuesday's robot test has also provoked reactions from both South Korea and the United States.

- It should be seen as a provocation on the part of Kim Jong-un and that is also how it is perceived, says Bergsten.

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