The United States and South Korea are discussing deploying more U.S. "strategic assets" to the region after North Korea's atomic test last week but not restoring U.S. nuclear arms to the South, a U.S. official said Monday.
North Korea said it tested a hydrogen bomb on Wednesday, displeasing China, its main ally, and the United States, which said it believes the blast was an ordinary atomic test rather than a much more powerful hydrogen bomb.
In a show of force and support for allies in the region following the test, its fourth since 2006, the United States on Sunday sent a nuclear-capable B-52 bomber based in Guam on a flight over South Korea.