North Korea launched several cruise missiles on Friday, South Korea's military said. South Korea's Joint Chiefs of Staff (JCS) said it detected an unspecified number of missiles launched from North Korea's west coast around 11 am (0200 GMT), news agency Yonhap reported. Yonhap said that it was Pyongyang's fourth cruise missile launch so far this year. North Korea has recently said that it has tested a new type of submarine-launched cruise missile, a Pulhwasal-3-31, to expand its nuclear strike c