Why don't you use a nuclear missile if you really don't fear death? What are you waiting for?
The international law is law made by the west when they were powerful after winning WW2. Countries like Zimbabwe, Zambia, India, Myanmar, China etc hardly has any say. It is outdated and has no credibility left.
In Kargil war, even India did not have BVR. BVR technology is a new one which came after 1990s when semiconductor became miniaturised enough to be able to be fitted on missiles. But the changes after Kargil have been many and in Indian favour. India developed its own BVR, radars, SAM, BMD, satellite systems, long range ICBM, massive ship building capability, Su30 indigenous manufacturing with full TOT along with development of Tejas, tanks and artillery manufacturing and many other developments which have made India much stronger. Pakistan has only developed Babur cruise missile but has not been able to develop radar, jets, satellites etc. So, India is at a massive advantage as of now.
India is not ready for long wars and neither is any country in the world ready for long wars as that is an internationally accepted norm to avoid other countries from panicking. So, the strategy is to maintain operational preparedness according to threat perceptions. Nevertheless, if the global situation changes, then India can make itself prepared for long wars in just a year's time. Pakistan is not capable of doing that as it has no indigenous technology.