This is an unusual move to make the USA and other countries with nuclear armaments to agree to nonproliferation of nuclear weapons. The suit may not win, but it puts those countries with WMD on notice to listen for the sake of human existence here on earth.
http://news.yahoo.com/tiny-pacific-nation-sues-9-nuclear-armed-powers-101148325.html http://news.yahoo.com/tiny-pacific-nation-sues-9-nuclear-armed-powers-101148325.html