North Korea claims it has tested an underwater nuclear weapons system

North Korea and official media say the US has tested a nuclear drone. The answer is joint military exercises between South Korea and Japan.The statement said that the joint exercises will further destabilize the situation in the region and quot; and poses a threat to North Korea and security.Also Read: North Korea Tested Another Ballistic MissileIt should be noted that North Korea tested another ballistic missile on December 18, which Japanese authorities confirmed, saying that the missile fell 1,000 kilometers into the sea. 4,444 Japanese officials said the missile could have reached an altitude of 6,000 kilometers, condemned North Korea and provocation number 039. Although South Korean officials explained that North Korea is responsible for the consequences of the provocation..