Days before President Barack Obama told the United Nations that he hoped to push through a universal treaty to ban all nuclear weapons testing by the end of 2010, a top Indian scientist threw New Delhi's security establishment for an atomic loop. Kasturiranga Santhanam, the coordinator of India's 1998 nuclear tests, went public with allegations that India's much heralded Pokhran II test of a thermonuclear bomb 11 years ago was actually a fizzle. "We are totally naked vis-a-vis China, which has an inventory of 200 nuclear bombs, the vast majority of which are giant H-bombs of power equal to three...