Hui Zhang re-examines the North Korean explosion on October 9, 2006. His research suggests that the test was likely not a failure if Pyongyang had planned for a yield of 4 kt, as it told Beijing prior to the event.

Hui Zhang provides a path-breaking technical assessment of the Korean nuclear test, publishing a comment (with co-authors Jungmin Kang and Frank von Hippel) on the test and the limits of nuclear forensics in Arms Control Today.

"...China is worried about how U.S. space weaponization plans might affect Chinese national security, international security, and protection of the space environment...."

"Chinese officials have expressed a growing concern that U.S. space and missile defense plans will stimulate a costly and destabilizing arms race...."

"While the US views —  and characterises —  these weapons as defensive, to China and to many other countries the construction of such a system looks more like the development of the Death Star spaceship in the Star Wars film series...."