wise man, are you assuming that A larger country with missile defence system will sit quite when Small poor unprotected nation will be launching Nuclear attacks to get thru its defence shield?
My weak brain says once you launch a single nuke attack on India, you will be showered with 10+ nukes at
unprotected cities like islamabad, karachi, lahore, pindi, etc.
May be some of your nuke will succeed to hit delhi or Mumbai, but till that time Pakistan will be history. You can hit us, but the price is your death