New Delhi, Aug. 19 -- Defence Minister Rajnath Singh reiterated that "no first use" remained the governing doctrine for India's nuclear weapons posture, but added "what happens in future depends on the circumstances." Similar off-the-cuff remarks have come from Indian officials in the past. Some claim this reflects an evolving nuclear doctrine, in which New Delhi is moving towards an embrace of a nuclear first strike. However, India's written nuclear doctrine and the delivery systems it is deploying remained geared to no first use. There is no real evidence that the strong consensus within the Indian strategic and political community in favour of no first use has changed....