Historians have argued that this marked the beginning of India's policy of keeping a "nuclear option". On 27 November 1964, the Jana Sangh introduced a motion in the Lok Sabha calling for the development of nuclear weapons. Shastri, reiterating his moral stand for nuclear disarmament, won a voice vote against the motion. However, he reminded the Parliament that the manufacture of nuclear weapons could be completed in "two or three years" if necessary. Then, for the first time, he said that India's work on nuclear energy for nonmilitary use would include the development of peaceful nuclear explosives, which he called "nuclear devices":