(Sorry, but given the scenario I just HAVE to say this)
I still can't believe London, Istanbul, Berlin, and Nanjing, and Washington just stood by and watched while that mad monarchy settle in though. They had DECADES where it would have been so easily to step in, dispose Hindu Radicals, and restore some level of stability and civility to that troubled region (Not to mention the global financial benefits the end to the constant terrorist activity and civil striff allowing for the subcontinent's huge labor pool to get educated and connected into the global economy), but instead they twiddled their thumbs until Devadatta's children went and backed their words with nuclear weapons. Now nobody wants to touch that ceasepool and we have to deal with the constant stream of crazy coming out of that country.
And London doing anything that is beyond rescuing opressed muslims (according to London and whoever allied with them atm) / doing border raids (according to Gandhipura(Delhi)) would be BROKE THE ALARM at Nanjing and Jakarta, and may even cause St Petersburg to made peace with Astana and march to India subcontinent to rescue the poor Hindus from British invasion.
Of course Nanjing march to war will cause Tokyo to support British "humanitarian mission" and restarting the great East Asian War. Remember that while Chinese army has the crushing numerical superiority, Japanese practically control the Pacific sea, Korea, and Siberia with their superrior air force and navy.
Any war between China and Japan would cause Americans to get in panic mode as they played the role of peaceful middleman in Asia, especially with Philippine States under range of both China and Japan bombers and missiles. No matter who they choose, there's risk of making 80 years of infrastructure building and turning filipinos into proper patriotic US Citizens going down under flames. And if they didn't choose, there's still significant chances that either or even both of East Asian powers still cause extreme disruption or even outright attacking Philiphines.
Not only that, Jakarta will definitely invade the lone British outposts at Singapore and New Guinea under the pretext of finally unite Nusantara proper. It's already bad enough when Malays rebelled and joined Nusantara, when British still beaten black and blue over Bharat Independence Wars, but now it would be an utter bloodbath after decades of Nationalistic inflammation. And absolutely nonzero chance for Jakarta to also decided to attack Philiphines as well if US did not support Bharat at this war.
If US end up not supporting Bharat by either directly stand with Tokyo or not supporting Nanjing... the Bolivar Pact of South American states may also try once again to "Liberate" Panama and American Guyana (shouldn't bought them from peniless French back in 1910's), and this would bring the Chaos at US doorstep.
But if US support Bharat too directly, lets say that British Canada's largest collection of Nuclear missile Silo suddenly become a very real threat...
And this is only in the end... give immense Profit to Germans as they are the ONLY superpower that didn't get invested in alliance that could drag them with Bharat side or directly against them. Sure, Ottomans would be giddy and sending their own army to help British crush the Bharat Abomination* but Germans would be perfectly willing to just sell weapons and commodities to anyone who will pay them. Profit in the short run that is, because Second World War like this will end up with Earth in ruin... and that's not counting nonzero risk that Russians made peace with each others and want round four with Berlin, bringing war directly to Europe again. And if Germany wins again, well sure to heart Deutchland Uber Alles to be sang everywhere there are beers.
...