In 2019, an undisclosed mission by the US military to infiltrate North Korea ended in failure, according to recent reports. The specifics of the operation, including its ultimate objective, remain classified. The event could potentially strain relations between North Korea and the United States, which have been fraught with tension over the years due to ongoing diplomatic and nuclear weapon disputes.

As Japan shares a geographical proximity and historical tension with North Korea, any military activities carried out by major world powers in the Korean Peninsula are of significant concern to the Japanese public. The news may ignite discussions about Japan's defense policy, and it's relationship with both the US and North Korea.

In contrast with the US and EU, where such issues are often clouded by swirling political discourse and potential consequences for diplomatic standing, Japan often responds more defensively due to its geopolitical position and historical experiences.