In accordance with the resolution A/RES/67/53, adopted by the U.N. General Assembly in December 2012, 28 states submitted their views "on a treaty banning the production of fissile material for nuclear weapons or other nuclear explosive devices, including possible aspects thereof." The reports have been posted on the official U.N. web site. Among the states that submitted their reports are France, India, Pakistan, the United Kingdom, and the United States. China, Israel, North Korea, and Russia did not submit their views. (Thanks to Ray Acheson of Reaching Critical Will for providing the link.)