Two neighboring nuclear powers with nearly a century of mutual hate fighting each other again and we have a ‘why it matters’? When it comes to history,’bad blood’ and world-changing possible outcomes, Russia/Ukraine has nothing compared to India/Pakistan.
Here’s a great site for “what if” nuke detonations.
1.6 million casualties if New Delhi were hit with an airburst by Pakistan’s 45kt nuke.
https://nuclearsecrecy.com/nukemap/