NPR:
North Korea has reportedly conducted a third test launch in just over a week, firing what appeared to be short-range ballistic missiles, according to South Korean officials.
The presidential office in Seoul said the South Korean and U.S. militaries believe the test to be of short-range ballistic missiles. South Korea’s Joint Chiefs of Staff noted that they flew about 137 miles and reached an altitude of 15 miles, traveling at the hypersonic speed of Mach 6.9.