In May 1998, while addressing at nuclear tests site near Pokhran, who added 'Jai Vigyan' to the Lal Bahadur Shastri's slogan 'Jai Jawan, Jai Kisan' ?
Atal Bihari Vajpayee
Jai Jawan Jai Kisan was a slogan given to India by the Prime Minister of India Lal Bahadur Shastri in 1965 at a public gathering at Ramlila Maidan, Delhi. After Pokaran tests in 1998 Atal Bihari Vajpayee added Jai Vigyan to the slogan to underline the importance of knowledge in India' progress.