A file image of North Korea's leader Kim Jong-Un witnessing a test-firing of an intercontinental ballistic missile in mid-March 2023. North Korea has since test-fired more weapon systems, including what it claims to be an ‘underwater nuclear strategic weapon'. (Jung Yeon-je/AFP via Getty Images)

North Korea has tested an unmanned ‘underwater nuclear strategic weapon' system that can inflict ‘radioactive tsunamis' on coastal areas, state news agency Korean Central News Agency (KCNA) announced on 24 March.

Tests of the earlier unknown weapon were conducted between 21 and 23 March off Riwon County in North Korea's South Hamgyŏng province. The weapon struck its simulated objective after travelling submerged at depths of between 80 and 150 m for 59 hours and 12 minutes, the agency said.

“The mission of the underwater nuclear strategic weapon is to stealthily approach [the enemy's] operational zones and cause a powerful radioactive tsunami with an underwater explosion such that it will destroy enemy ships and disrupt port operations,” reads the KCNA announcement.

“The nuclear unmanned attack craft can be deployed against any coast, ports, or surface vessels in offensive operations,” it added.

A file image of North Korea's leader Kim Jong-Un witnessing a test-firing of an intercontinental ballistic missile in mid-March 2023. North Korea has since test-fired more weapon systems, including what it claims to be an ‘underwater nuclear strategic weapon'. (Jung Yeon-je/AFP via Getty Images)

North Korea has tested an unmanned ‘underwater nuclear strategic weapon' system that can inflict ‘radioactive tsunamis' on coastal areas, state news agency Korean Central News Agency (KCNA) announced on 24 March.

Tests of the earlier unknown weapon were conducted between 21 and 23 March off Riwon County in North Korea's South Hamgyŏng province. The weapon struck its simulated objective after travelling submerged at depths of between 80 and 150 m for 59 hours and 12 minutes, the agency said.

“The mission of the underwater nuclear strategic weapon is to stealthily approach [the enemy's] operational zones and cause a powerful radioactive tsunami with an underwater explosion such that it will destroy enemy ships and disrupt port operations,” reads the KCNA announcement.

“The nuclear unmanned attack craft can be deployed against any coast, ports, or surface vessels in offensive operations,” it added.

A file image of North Korea's leader Kim Jong-Un witnessing a test-firing of an intercontinental ballistic missile in mid-March 2023. North Korea has since test-fired more weapon systems, including what it claims to be an ‘underwater nuclear strategic weapon'. (Jung Yeon-je/AFP via Getty Images)

North Korea has tested an unmanned ‘underwater nuclear strategic weapon' system that can inflict ‘radioactive tsunamis' on coastal areas, state news agency Korean Central News Agency (KCNA) announced on 24 March.

Tests of the earlier unknown weapon were conducted between 21 and 23 March off Riwon County in North Korea's South Hamgyŏng province. The weapon struck its simulated objective after travelling submerged at depths of between 80 and 150 m for 59 hours and 12 minutes, the agency said.

“The mission of the underwater nuclear strategic weapon is to stealthily approach [the enemy's] operational zones and cause a powerful radioactive tsunami with an underwater explosion such that it will destroy enemy ships and disrupt port operations,” reads the KCNA announcement.

“The nuclear unmanned attack craft can be deployed against any coast, ports, or surface vessels in offensive operations,” it added.

A file image of North Korea's leader Kim Jong-Un witnessing a test-firing of an intercontinental ballistic missile in mid-March 2023. North Korea has since test-fired more weapon systems, including what it claims to be an ‘underwater nuclear strategic weapon'. (Jung Yeon-je/AFP via Getty Images)

North Korea has tested an unmanned ‘underwater nuclear strategic weapon' system that can inflict ‘radioactive tsunamis' on coastal areas, state news agency Korean Central News Agency (KCNA) announced on 24 March.

Tests of the earlier unknown weapon were conducted between 21 and 23 March off Riwon County in North Korea's South Hamgyŏng province. The weapon struck its simulated objective after travelling submerged at depths of between 80 and 150 m for 59 hours and 12 minutes, the agency said.

“The mission of the underwater nuclear strategic weapon is to stealthily approach [the enemy's] operational zones and cause a powerful radioactive tsunami with an underwater explosion such that it will destroy enemy ships and disrupt port operations,” reads the KCNA announcement.

“The nuclear unmanned attack craft can be deployed against any coast, ports, or surface vessels in offensive operations,” it added.

A file image of North Korea's leader Kim Jong-Un witnessing a test-firing of an intercontinental ballistic missile in mid-March 2023. North Korea has since test-fired more weapon systems, including what it claims to be an ‘underwater nuclear strategic weapon'. (Jung Yeon-je/AFP via Getty Images)

North Korea has tested an unmanned ‘underwater nuclear strategic weapon' system that can inflict ‘radioactive tsunamis' on coastal areas, state news agency Korean Central News Agency (KCNA) announced on 24 March.

Tests of the earlier unknown weapon were conducted between 21 and 23 March off Riwon County in North Korea's South Hamgyŏng province. The weapon struck its simulated objective after travelling submerged at depths of between 80 and 150 m for 59 hours and 12 minutes, the agency said.

“The mission of the underwater nuclear strategic weapon is to stealthily approach [the enemy's] operational zones and cause a powerful radioactive tsunami with an underwater explosion such that it will destroy enemy ships and disrupt port operations,” reads the KCNA announcement.

“The nuclear unmanned attack craft can be deployed against any coast, ports, or surface vessels in offensive operations,” it added.

A file image of North Korea's leader Kim Jong-Un witnessing a test-firing of an intercontinental ballistic missile in mid-March 2023. North Korea has since test-fired more weapon systems, including what it claims to be an ‘underwater nuclear strategic weapon'. (Jung Yeon-je/AFP via Getty Images)

North Korea has tested an unmanned ‘underwater nuclear strategic weapon' system that can inflict ‘radioactive tsunamis' on coastal areas, state news agency Korean Central News Agency (KCNA) announced on 24 March.

Tests of the earlier unknown weapon were conducted between 21 and 23 March off Riwon County in North Korea's South Hamgyŏng province. The weapon struck its simulated objective after travelling submerged at depths of between 80 and 150 m for 59 hours and 12 minutes, the agency said.

“The mission of the underwater nuclear strategic weapon is to stealthily approach [the enemy's] operational zones and cause a powerful radioactive tsunami with an underwater explosion such that it will destroy enemy ships and disrupt port operations,” reads the KCNA announcement.

“The nuclear unmanned attack craft can be deployed against any coast, ports, or surface vessels in offensive operations,” it added.