Doubts about the effectiveness of India's nuclear weapons have triggered concerns among the country's defence community about the robustness of the country's strategic deterrent.rnK Santhanam, project director for underground nuclear tests conducted by India in 1998, claimed at a seminar in New Delhi in late August that the yield for the sole thermonuclear test was a "fizzle" and had failed to produce the claimed yield of 45 kT.
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