North Korea tests ballistic missile with super-large warhead

North Korea successfully tested a new tactical ballistic missile, Hwasongpho-11 Da-4.5, capable of carrying a 4.5-ton super-large warhead. South Korea reported two missile launches, with the second likely failing. North Korea plans another missile launch in July to test the warhead's "explosion power." The KN-23 missile, part of the Hwasong-11 series, flew about 600 km. North Korea and Russia deny arms trade but have strengthened ties.