The former president of the United States, Jimmy Carter, is accusing his own country for the erosion of the Non-Proliferation Treaty (NPT). "The United States is the major culprit in this erosion of the NPT," wrote Carter in an article published in the American daily International Herald Tribune Monday. "While claiming to be protecting the world from proliferation threats in Iraq, Libya, Iran and North Korea, American leaders not only have abandoned existing treaty restraints but also have asserted plans to test and develop new weapons, including antiballistic missiles, the earth-penetrating "bunker buster" and perhaps some new "small" bombs.'' "They...