Pyongyang, North Korea - North Korea has unveiled a new "suicide drone", state media said Monday, with leader Kim Jong-un overseeing a performance test of the weapons, which experts said could have come from Russia.

Wearing a cream baker boy hat, Kim was shown beaming as he watched, aided by high-powered binoculars, as the drones blew up targets, images in state media showed.

Kim said that "it is necessary to develop and produce more suicide drones", the official Korean Central News Agency (KCNA) reported, in addition to "strategic reconnaissance and multipurpose attack drones".

Suicide drones are explosive-carrying unmanned drones designed to be deliberately crashed into enemy targets, effectively acting as guided missiles.

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The nuclear-armed North's growing drone fleet will "be used within different striking ranges to attack any enemy targets on the ground and in the sea," KCNA said.

All the drones North Korea tested on August 24 "correctly identified and destroyed the designated targets after flying along different preset routes," it added.

Kim also said his country would work towards "proactively introducing artificial intelligence technology into the development of drones."

Experts said the drones in the images released by state media looked similar to the Israeli-made HAROP suicide drone, Russian-made Lancet-3, and Israeli HERO 30.

North Korea may have acquired these technologies from Russia, which in turn likely obtained them from Iran – with Tehran itself suspected of accessing them through hacking or theft from Israel.

"The suicide drone that looks similar to HAROP can fly over 600 miles," said Cho Sang-keun, a professor at South Korea's Korea Advanced Institute of Science and Technology.

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This is a significant threat to South Korea's national security and its critical facilities, added Cho.

"They are showing off that they have the ability to hit everything from the tactical level to the strategic level."

"Should there be a provocation or an international conflict, the South Korean army would inevitably sustain significant damage from these suicide drones," Cho said.

In 2022, Pyongyang sent drones across the border which Seoul's military was unable to shoot down, saying they were too small. A year later, South Korea launched a drone operation command to better address the growing threat.