Rajaram Nagappa, Arun Vishwanathan, Aditi Malhotra, Hatf-IX/ NASR - Pakistan’s Tactical Nuclear Weapon: Implications for Indo-Pak deterrence, NIAS Report R17-13, Bangalore: National Institute of Advanced Studies, July 2013, ISBN: 978-81-87663-79-9.
The full text of the report is available here
Following the Pakistani tests and claims of NASR being a nuclear capable missile, there has been a lot of analysis pointing to the dangers it poses for Indo-Pak deterrence. However, despite the large amount of literature which has come out following the NASR test in April 2011, not much attention has been directed at carrying out a holistic assessment of the tactical nuclear weapons issue. It is this crucial gap that that this report seeks to address.
The NASR poses important challenges for nuclear stability between India and Pakistan. However, in order to understand the drivers and Pakistan’s thinking behind NASR, it is crucial to get a handle on the countries’ thinking about nuclear deterrence.
The NASR warhead section has been estimated to have a cylindrical section which is 361 mm in diameter and 940 mm long with a conical portion which is 660 mm long. Thus, the important question is whether (a) Pakistan has a miniaturized weapon warhead which will fit into this dimension, (b) whether it has been tested and (c) in the absence of tests, how reliable is the weapon system. Most importantly, in the absence of demonstrated reliability, how confident will Pakistan be in fielding it?
Will Pakistan consider its tested HEU weapons in stock as adequate for its security or will it consider it necessary to diversify its stockpile? Another important question to consider is whether Pakistan will divert all or part of its uranium reserves for production of an untested Plutonium based weapon.
Pakistan’s gambit of using NASR to signal a lowering of its nuclear threshold to counter any conventional military operation by India is likely to pose challenges for robustness of nuclear deterrence between Pakistan and India. An important question to ponder over and one that holds some importance for nuclear stability in the Indian sub-continent is whether NASR is leading Pakistan into a ‘commitment trap.’ It would be wise to guard against a situation where Pakistan would be forced to follow through just because of its past assertions. The study shows that a weapon system like NASR has more disadvantages than advantages from all considerations ranging from damage potential to impact on deterrence stability.
