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Recently, North Korean General Secretary Kim Jong Un's bodyguards have been seen carrying black bags, unlike before. When I saw when these bare-knuckled men had been carrying these bags, it was the day after the terrorist attack targeting Japan's Prime Minister Kishida.

Jaeyoung Choi is a reporter.

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This is a photo released by the Korean Central News Agency on the 18th regarding the local map of the National Space Development Agency.

Bodyguards surround General Secretary Kim Jong-un as he stands with his daughter Ju-ae in a large square and receives a report.

In the hands of the bodyguards are black bags.

If you look at other photos, the black bag in your hand is more clearly visible.

On the 16th, at the opening ceremony of a 1,2018-unit house in Hwaseong, North Korea, you can see black bags in the hands of bodyguards on the side of the road.

You can put a machine gun in a black bag, or you can use it as a shield in case of emergency.

It's a stark change from the past.

At the Panmunjom summit in April 4 and at the groundbreaking ceremony for another 2,1-unit housing in February this year, about two months ago, the bodyguards stationed around General Secretary Kim are all bare.

Experts note that the 16th day when black bags were revealed in the hands of bodyguards was the day after the explosive attack on Japan's Prime Minister Kishida.

[Hong Min/Director of North Korea Research at the Korea Institute for National Unification: There is basically a trend of strengthening security by world leaders. North Korea's recent sensitivity to ROK-US trends such as the decapitation operation (considering that it is in the mood to strengthen security)]

There is also an analysis that the recent economic situation reflects the unstable situation inside North Korea, and that it is an atmosphere of strengthening security protection.

(Video editing by Cho Moo-hwan)