North Korea tests undersea nuclear weapon system, warns of more

North Korea claims an important test of an underwater nuclear weapon system, the Haeil-5-23, was conducted by the Underwater Weapon System Institute. The test was in response to joint naval drills conducted by South Korea, the US, and Japan. Details regarding the test, including the date and result, were not provided.

North Korea tests undersea nuclear weapon system, warns of more
North Korea claims an important test of an underwater nuclear weapon system, the Haeil-5-23, was conducted by the Underwater Weapon System Institute. The test was in response to joint naval drills conducted by South Korea, the US, and Japan. Details regarding the test, including the date and result, were not provided.