
SEOUL, South Korea — North Korea fired a suspected long-range ballistic missile into the sea Monday in a resumption of its weapons testing activities, its neighbors said, as the North vows retaliatory steps against U.S. and South Korean moves to boost their nuclear deterrence plans. South Korea’s military said in a statement that North Korea launched what appeared to be a long-range ballistic missile from its capital region Monday morning. It said South Korea maintain a readiness while exchanging information about the launch with U.S. and Japanese authorities. Japan’s Defense...