Last week, a retired Indian defense scientist, K. Santhanam, claimed 10 years after the fact, that one of India's nuclear tests in 1998 was a fizzle. He said in a press interview that the yield in the thermonuclear device test was much lower than what was claimed. Mr. Santhanam, who only cited unspecified seismic measurements and expert opinion from world over, said that due to the failed test, India should not sign the Comprehensive Test Ban Treaty (CTBT). The Indian government has strongly refuted Santhanam's charges.Principal Scientific Adviser R. Chidambaram told The Hindu that those...