North Korea test-fires underwater ballistic missile.

       North Korea announced Saturday the successful test- firing of a submarine - based ballistic missile, the North Korea News Agency reported. North Korea leader Kim Jong Un praised the test as a " miracolous achievement", and saying his country is capable of producing  submarine ballistic missile. This latest achievement will give the asolated Asia country of North Korea a military edge to strike and hit target of any potential threat to the country. North Korea believe US and South Korea are big threat to its national security. Developnent of a submarine launched missile capability would take the North Korea nuclear threat to a new level.