Permanent peace comes when you break up your enemies country. Like what happened to Germany after ww2 and Korea, vietnam and possibly Ukraine soon. I know someone will say Bangladesh but India let it
become a sovereign nation with no grip over it and a second hindu genocide.
Most people don't realise that when China invades Taiwan the outcome of that war would hopefully be the last battle in the civil war between the CCP & the Kuomintang spanning nearly a century as of today which has merely seen a ceasefire by and large peaceful till date for 75+ years much like the Korean Armistice Agreement & the 38th parallel .
The same would be the case for India vs Paxtan / Bangladesh as & when we get down to settle the unfinished business of partition.
Unfortunately I wish I could say this would be the last battle for while the previous two examples could well result in a final war resulting in reunification or more splintering our wars will definitely be indecisive for these ancient animosities can't & won't be resolved with just one war here or there however decisive the result.
For that to happen either the whole mass of India gets converted or theirs do or either party gets completely annihilated.