Key Terms & Concepts — UPSC Mains
Operation Shakti (Pokhran-II Nuclear Tests, 1998)
"The series of five nuclear weapon tests conducted by India at the Pokhran range in Rajasthan on 11 and 13 May 1998, which established India as a declared nuclear-weapon state and gave rise to National Technology Day."
Operation Shakti, popularly known as Pokhran-II, refers to the five nuclear weapon tests carried out by India at the Pokhran Test Range in the Thar desert of Rajasthan on 11 May 1998 (three devices) and 13 May 1998 (two devices). The operation was authorised by Prime Minister Atal Bihari Vajpayee and executed jointly by the Defence Research and Development Organisation (DRDO) and the Bhabha Atomic Research Centre (BARC), with Dr APJ Abdul Kalam and Dr Rajagopala Chidambaram as the principal scientific leaders. The five devices tested were: Shakti-I (a thermonuclear device of approximately 45 kt yield), Shakti-II (a fission device of about 15 kt -- weaponised plutonium), Shakti-III (a sub-kiloton device of around 0.3 kt), Shakti-IV and Shakti-V (both sub-kiloton experimental devices tested on 13 May). The tests were conducted under tight secrecy to evade US satellite surveillance, with troops, scientists and equipment moved at night and disguised as routine activity. After the tests, PM Vajpayee declared India a nuclear-weapon state. The United States, Japan, Canada, Australia and several other countries imposed economic and technology sanctions, and the US passed the Glenn Amendment-driven sanctions package. India responded by articulating its Draft Nuclear Doctrine (1999) and formalised No First Use, Credible Minimum Deterrence and civilian command and control through the Nuclear Command Authority (2003). The first test of 11 May 1998 has since been commemorated annually as National Technology Day. Pokhran-I (Operation Smiling Buddha, 1974), conducted under Indira Gandhi, was India's first 'peaceful nuclear explosion' and predates Operation Shakti by 24 years.
Important for UPSC GS3 (Science and Technology, Internal Security), GS2 (International Relations -- sanctions, NSG, NPT) and Essay. Examiners test the date (11 May 1998), the number of devices (5), the leaders (Vajpayee, Kalam, Chidambaram), and the link to National Technology Day. Mains angles cover India's nuclear doctrine evolution, sanctions and the 2008 NSG waiver, and the strategic rationale (China-Pakistan threats, CTBT pressure). Pokhran-I (1974) vs Pokhran-II (1998) is a high-frequency Prelims contrast.
- 1 Five nuclear tests at Pokhran, Rajasthan, on 11 May (3 devices) and 13 May 1998 (2 devices)
- 2 Authorised by PM Atal Bihari Vajpayee; led scientifically by Dr APJ Abdul Kalam and Dr R Chidambaram
- 3 Devices: Shakti-I (thermonuclear, approx 45 kt), Shakti-II (fission, approx 15 kt), Shakti-III to V (sub-kiloton)
- 4 Conducted by DRDO and BARC; executed in secrecy to evade US satellite surveillance
- 5 PM Vajpayee declared India a nuclear-weapon state after the tests
- 6 Triggered sanctions from US, Japan, Canada, Australia (Glenn Amendment in US)
- 7 11 May is commemorated annually as National Technology Day
- 8 Led to Draft Nuclear Doctrine 1999 and Nuclear Command Authority 2003
- 9 Pokhran-I (1974, Operation Smiling Buddha) under Indira Gandhi was India's first nuclear test
On 11 May 2026, India observed the 28th National Technology Day commemorating Operation Shakti. The day's official events at Vigyan Bhavan, New Delhi, honoured surviving members of the 1998 Pokhran team and announced the National Technology Awards 2026 -- continuing the tradition begun by PM Vajpayee in 1999 of pairing the anniversary of the nuclear tests with recognition of indigenous technological achievement.
