Amid rising tensions in the Korean peninsula, North Korea says it has tested a ‘secret weapon’ that is capable of unleashing a ‘radioactive tsunami’. Pyongyang tested an underwater drone in waters off South Hamgyong province. The test was overseen by North Korean leader Kim Jong Un and Pyongyang claims the ‘secret weapon’ is capable of annihilating ‘enemy ship groups’ without detection. North Korea claims it has been forced to strengthen ‘war deterrence’ amid ongoing U.S-South Korea drills. Watch this video for details.