North Korea ballistic missile test 'successesful'

   North Korea has confirmed that it "successfully" fired a ballistic missile yesterday in a test supervised by leader Kim Jong-un.

  The device was described as a "surface-to-surface medium-to-long-range ballistic missile", the Korean state news agency reported.
  South Korea's defence ministry called it an armed provocation to test the response of US President Donald Trump.
  North Korea's latest ballistic missile test has been widely condemned.
The US, Japan and South Korea have requested an urgent meeting of the United Nations Security Council to discuss the incident.
  According to the Korean report, the rocket used a solid-fuel engine, which gives ballistic rockets greater power and range.
  South Korea military experts said the rocket had been launched by a "cold-eject" system, which uses compressed gas for its initial thrust, a system employed for submarine-launched missiles.