The Marshall Islands is suing the nine known nations with nuclear weapons at the international court of justice at The Hague, over charges they have violated their legal obligation to disarm under the 1968 nuclear non-proliferation treaty (NPT). From the Guardian:
In the unprecedented legal action, comprising nine separate cases brought before the ICJ on Thursday, the Republic of the Marshall Islands accuses the nuclear weapons states of a "flagrant denial of human justice". It argues it is justified in taking the action because of the harm it suffered as a result of the nuclear arms race. The Pacific chain of islands, including Bikini Atoll and Enewetak, was the site of 67 nuclear tests from 1946 to 1958, including the "Bravo shot", a 15-megaton device equivalent to a thousand Hiroshima blasts, detonated in 1954. The Marshallese islanders say they have been suffering serious health and environmental effects ever since.
Named in the lawsuit are the United States, Russia, China, France, the United Kingdom, India, Pakistan, North Korea, and Israel, an undeclared nuclear weapons state.