I don't think either side would come off well in this situation. Firstly they are both nuclear powers so are never going to escalate to full scale war, it's more likely we see contained skirmishes - like those that have happened in Kashmir for decades on and off. There is a small risk that a miscalculation by one side spirals into unintended consequences, but war is highly destructive to an economy. Take a look at Russia for example, on paper it might look like it's doing great and producing a lot of things, but if you make 100 tanks at $5 million a piece and they all get destroyed within weeks, that $500 million is added to GDP with nothing to show for it. Ultimately it'll probably simmer for a few months and hopefully there will be a reconciliation