Good post! Yes let's stay on topic. I disagree nuclear being a factor here. As regarding Indian nuclear stockpile it's still atomic-bomb tech, it has not crossed fusion-tech threshold yet till nowadays, the firepower is too small to deter much larger powers which possess thermonuclear weapons (see the NTI data, note China's stockpile data was from 1990), not to mention delivery systems & strategic infrastructure also lag far behind. Geopolitically speaking China-India war is inevitable, it will be full-scale with clear geopolitical objective not border skirmishes, but conventional all the way no nukes involved, no one from either side wants an unilateral annihilation of India.
When it comes to North Korea, or even Iran which does not possess any nuke at all (at least now), perhaps we should take
nuclear umbrella into consideration, cos that's might be a far bigger factor.