>> North Korea's unseizing weapons parade looks to be making headway. Pyongyang launching a ballistic missile from a submarine on Wednesday. The rocket traveling for 300 miles clearing to a patch of ocean under Japanese air space. Expert say it's a clear step up in North Korea's rocketry game.
The US and South Korea plan to role out an anti-missile defense system called bad and response to the threat from the North. And as Reuters Jack Kim reports, Pyongyang maybe trying to stay one step ahead by launching rockets from under the water.>> Moving the missile in a submarine to circumnavigate the field of vision of that radar might be possible that North Korea is able to launch missile without or defense system on tracking the trajectory and therefore trying to shoot it down.
>> Beyond pure muscle flexing, the launch could be a call for respect, coming the same day the foreign ministers from South Korea, China, and Japan meet in Tokyo, and just two days after Washington and Seoul began joint military exercises. Pyongyang calls the drills a practice for an invasion and has threatened retaliation.
And it's taking steps to backup that talk.>> The ultimate goal for North Korea would be to try to mount a nuclear warhead on a ballistic missile and launch it in a way that's reliably going to hit the target. It will also try to upgrade its fleet of submarines which South Korea believes they have shorter ranges or are noisy so that they are easily track by South Korean or US surveillance.
>> Observer say there's no firm evidence that North Korea is able to arm nuclear rockets but these kind of weapons benchmarks have been tested hard and fast on a near monthly basis this year and the world is clearly taking notice.