By Edith M. Lederer and Hyung-Jin Kim
North Korea vowed on Thursday to launch a pre-emptive nuclear strike against the United States, amplifying its threatening rhetoric as U.N. diplomats voted on whether to level new sanctions against Pyongyang for its recent nuclear test.
An unidentified spokesman for Pyongyang’s Foreign Ministry said the North will exercise its right for “a preemptive nuclear attack to destroy the strongholds of the aggressors” because Washington is pushing to start a nuclear war against the North.