The Wall Street Journal:
North Korea’s moratorium on missile test flights has precluded it from trying out the technology it would need to strike the U.S. with a nuclear-tipped ICBM, a top U.S. military officer said Friday.
While North Korea has demonstrated that it has nuclear weapons and long-range missiles, it hasn’t shown that it has mastered the complicated steps of delivering a warhead to the U.S. mainland, said Air Force Gen. Paul Selva, the vice chairman of the Joint Chiefs of Staff.
To do that, Pyongyang needs to develop and test a reliable targeting system and a survivable re-entry vehicle, the portion of a missile that contains a nuclear warhead and which is designed to withstand the stress of re-entering the atmosphere…
