CNN CNN International May 12, 2015 06:33:00
Still worrisome? >> yes, first, we see the white that indicates the missile did penetrate the water. and later, we see that the missile fired its engine. so this, to me, indicates that there was a successful missile test. it was not just a test of the ejection system. >> reporter: an official says north korea could have a fully operational submarine with a missile within four or five years, even if this test wasn't all if was claimed to be, north korea could still eventually put nuclear warheads on these missiles, could hide the missiles on merchant ships and fire them from those vessels, clos...