in asymmetric conflicts, great powers often adopt coercive strategies toward weak states. this strategy is a combination of threat, and limited and warning use of force if necessary to impact the opposite's strategy choice. given that the threats of the most powerful states are more effective because the penalty for target disobedience will be more intensive, it seems that the weak states ...

The Nuclear Notebook is researched and written by Hans M. Kristensen, director of the Information Project with Federation American Scientists, Matt Korda, a research associate project. column has been published in Bulletin Atomic Scientists since 1987. This issue’s examines North Korea’s nuclear arsenal. authors cautiously estimate that Korea may have produced enough fissile material to build b...

Strong ground motions induce large dynamic stress changes that may disturb the magma chamber of a volcano, thus accelerating the volcanic activity. An underground nuclear explosion test near an active volcano constitutes a direct treat to the volcano. This study examined the dynamic stress changes of the magma chamber of Baekdusan (Changbaishan) that can be induced by hypothetical North Korean ...

In response to North Korea's nuclear weapons program, South Korea is quietly pursuing an independent conventional counterforce and countervalue strategy. This strategy unique. Few, if any, nonnuclear states have sought rely on advanced capabilities deter a nuclear-armed adversary. Why strategy, what could its impact be strategic stability the Korean Peninsula? approach should understood as both...

the present nuclear leakage crisis from japan is a topic to be discussed in present public health. in radiology, the leaked radioactive elements are considered hazard. here, the author briefly reviews and discusses on two important radio-hazard elements in post nuclear power plant crisis, radioactive iodine and radioactive cesium. based on previous similar nuclear crisis in russia, it is eviden...