Mr Magra,
India as a nation was a term given to it by orientalists and European colonialist. I am sure you know that India's official name is Bharat, and that Bharat is a day younger than Pakistan, outside of a few moments in history it has never been of the geographical expanse that is today India, Pakistan and Bangladesh. As a country Pakistan and the Indus valley along-with is Harapa and Taxila are far older civilizations. It is a simple fact of human migration from Africa. However we wont get into an anthropological discussion, nor at the smartness of Indian's to co-opt the history and culture of a land and its people that in large measure was driven by my religionists and co-inhabitants of Pakistan. You can thank that to the dumb arabization of our culture by leaders of Pakistan who have no context of national narratives and mythological development, as a glue for national cohesion.
Modi is a symptom of Indian establishment, not the rudder. He would not survive a day in that position, and in some ways his only survival comes from his rabid anti-muslim and anti-pakistan philosophy. He is the useful idiot here.
Again with respect to China not believing I am not sure where you get that from. China is fully aware and on the same page with Pakistan. China has never disagreed with our assessment of threats from India. What they tell us is that we should not expect anything material from International bodies. That we need to fix our economy, our society and our military before we internationalize an issue. They have been proven right especially after the fiasco of OIC and the long term ineffectiveness of UN. In some ways China is teaching us to be less emotional, more mature and long term in our policies. Even your best friend these days the USA has opening stated you are doing exactly what I state. The only point i agree with you is the 1999 adventure. It was dumb to the highest level. However I would ask you to awaken your memory just a bit longer and consider Siachen as the starting point of that. I am very aware of what happened in Siachen (directly), and if you are an objective and honest broker you'll agree that that was not wise on India's part. Pakistan was caught sleeping and India took short term advantage, over a longer term animus and distrust.
Since India is the bigger and more powerful nation in this relationship, I will leave it to India to show a way out of this tit-for-tat. Pakistan should rightfully stay a security state till we are fully certain we can let our guard down.