In last 60s, Russian was once planning to retaliate Chinese nuclear facilities with 200 nuclear warheads, how many warheads did Chinese have at the time? Less than 20! Today, publically Pakistan has around 120, do your math, what is necessary figure for India to make them a piece of show? There are quite a lot experts out there checking your defence budget, your nuclear material imports, your factories production rate. They maybe wrong with exact number of India's nuclear warheads. But there is no way that they will underestimate your nuclear force 10 times. Maintaining a nuclear force with more 1000 warheads is completely different thing than merely 100-150. Yes there is a significant number maybe hide, but misread 1000 nukes to 100 nukes? Highly unlikely. I am not arguing if India has good reason or not. I am trying to point out that India is publicly blaming Pakistan government is behind all these terrorism attack, but she has been doing nothing significantly when she is enjoying an overwhelming superiority on conventional military forces. There must be a reason that she is doing what she should do. My guess is: Pakistan's nuclear weapon.