Washington and Pyongyang made little progress at latest round of talks.
A mysterious August explosion in Russia occurred during efforts to recover a sunken, nuclear-powered cruise missile, according to a U.S. official.
Technical issues are slowing U.S. efforts to upgrade two nuclear warheads.
Forty nongovernmental leaders in nuclear nonproliferation and disarmament, as well as former government officials and diplomats, voiced their demand for the entry into force of the 1996 Comprehensive Nuclear Test Ban Treaty (CTBT) at the 11th Conference on Facilitating the Entry into Force of the CTBT.
Everybody knows that nuclear weapons have been used twice in wartime and with terrible consequences. Often overlooked, however, is the large-scale, postwar use of nuclear weapons: At least eight countries have conducted 2,056 nuclear test explosions, most of which were far larger than the bombs that leveled Hiroshima and Nagasaki.
An innovative verification approach could help build confidence that North Korea is complying with any denuclearization agreement in the future.
The co-chair of the Ban Ki-moon Centre warns of an unraveling system of restraints on the nuclear powers.
France Admits Nuclear Coercion in Polynesia