South asia is fucked from climate change. The heatwaves are gonna make life hell and basically unlivable for large parts of the year, it's already a large burden on quality of life in the area. Let me tell you, heat fucks you up good, it's like living with a constant 20kg weight strapped to your back. You need vastly more water, your physical strength and endurance drops like a rock, you are at constant risk of heat stroke even from minor physical activity, people tend to stay indoors, people get more violent, crops and livestock die, you can't think properly, there's loads of energy being used for air-conditioning, infrastructure wears down quicker due to heat expansion, food rots quicker, basically all machinery like engines and power plants work less efficiently in high heat and breaks down faster.
You simply cannot work in high heat, your body is literally breaking down on you, I can easily jog for an hour at night, but doing it for 5 mins in the mid-day sun and I start to get dizzy, forcing myself to jog for an hour in high heat will literally kill me. Not to mention the mass casualty events when the heat exceeds the wet bulb temperature. You can engineer away earthquakes, floods, cold snaps, typhoons and wildfires and other natural disasters to some extent, but it's near impossible to do so for heat and drought.
Bangladesh is extremely vulnerable to sea level rise, a minor rise in sea level means tens of million displaced and probably fleeing to India as refugees. South asia also gets a large portion of it's water from Himalayan glaciers, which are slowly going away and who know what the changing climate will do to the Monsoon. Just a single year without the Monsoon and you'll be seeing instant massive famine. India has more people than China, but a third of the land to house them in. Add in the religious/ethnic conflicts, heat stress, the India/Pakistan conflict, the nukes and the increase topical diseases and you got a brewing storm of the century right there.
India is falling into the same trap as Russia, they truly are deluded enough to think that they are a superpower and that they can go in it alone with some minor support from the West and not needing the support of the country that controls a large chunk of their water supply. And they are in the same trap as most of the West, they are unable to see past the next election cycle and unable to see the coming climate disaster that going to hit the region, this beef with China isn't sustainable, not when you're struggling to feed your people amid 45 degree heat and ever decreasing stable source of freshwater and multiple ethnic and religious conflicts among your neighbors.
If India was smart, they would buckle down with China and all their neighbors to work towards just surviving the coming climate disruption. But because nationalistic population tends to win elections, they will probably just double down and focus trying to combat China and becoming a superpower until it's too late. Imagine having bad relations with the country that controls a large portion of your stable water supply.
Funny how the mainstream media focus on how China is totally collapsing for real guys and nobody is talking about how it's biologically impossible for the human body to survive the 50+ degree heatwaves that are already starting to appear in south asia.