GOP presidential front-runner Donald Trump has raised the possibility that Japan arm itself with nuclear weapons to deter a threat from North Korea which sent chills down the spines of many who experienced the devastation of a nuclear bomb first-hand. cnn.com

North Korea’s ICBM engine test last week showed that the communist nation could make its road-mobile long-range missiles deliver nuclear warheads as far as the U.S. east coast, including Washington and New York, a U.S. expert warned Monday. koreatimes.co.kr

In addition to nuclear weapons, North Korea has other WMD to threaten South Korea and its allies. nknews.org

It is good China and US are cooperating over nuclear security. scmp.com