The Bulletin of the Atomic Scientists publishes the Nuclear Notebook, an authoritative accounting of global nuclear warheads compiled by top experts from the Federation of American Scientists. Today, it is prepared by Hans M. Kristensen and Matt Korda of FAS. The Nuclear Notebook Interactive provides a colorful look at the arsenals of all nine nuclear weapons states: United States, Russia, United Kingdom, France, China, Israel, India, Pakistan, and North Korea.