Impending heat wave disasters: Are S Asian countries prepared?

The United Nations and the Red Cross have sounded the alarm bell: heatwaves will become so extreme in certain regions of the world including our South Asia that maintaining human life will not be sustainable in these places. The Sahel, the Horn of Africa as well as South and Southwest Asian regions will witness heat waves that will “exceed human physiological and social limits” triggering large-scale suffering and loss of life.
That this prediction holds true is being palpably felt for quite some years as in the summer it has become increasingly difficult to maintain life in Bangladesh due to extreme hot weather. Before the UN’s COP27 climate change summit that is going to be held next month in Egypt, it has been warned that aggressive steps are needed to be taken immediately to avert potentially recurrent heat disasters.
Besides the heat waves, rising sea levels and changing rainfall patterns are already disrupting the ecosystem and damaging livelihoods. These vagaries will become more intense in the time to come. According to a previous forecast, by the end of the century, many areas of the populous continent of Asia could see mean temperatures shoot up to eight degrees Celsius above pre-industrial levels.
This is indeed a grim prediction for a country like Bangladesh which is already witnessing, and acutely so, prolonged heat waves and unusual rainfall. Rise in sea level will submerge much of the country’s coastal areas. Now the question that arises is: are Bangladesh or vulnerable countries such as Myanmar, the Philippines, Vietnam, Pakistan and Thailand preparing themselves for these grim prospects?
When countries worldwide are faced with bleak climate change facts, it was a matter of extreme surprise that the US under the leadership of Donald Trump withdrew itself from the 2015 Paris climate change accord through which nations had committed to keeping global temperatures well below 2.0 degrees Celsius above pre-industrial times. Though Joe Biden, after his election to office, came back to the commitment, nations seem to be not serious about the climate change predicament.  
Experts say even a 2 degrees Celsius rise in heat will be difficult to manage, and a 4 degrees Celsius increase can cause humanitarian disasters in many nations and result in unmanageable migration flows or locked-in populations. Besides the sea level rise, heat waves as well various diseases would take their toll.
Now, the vulnerable countries or LDCs ought to create pressure on the developed countries to extend their financial and technical support to climate change vulnerable countries. There is a Green Climate Fund (GCF) within the framework of the UNFCCC founded as a mechanism to assist developing countries in adaptation and mitigation practices to counter climate change.
However, it would be very worthwhile if the vulnerable countries, especially in South and Southwest Asia regions create a forum of their own to find out means and ways to effectively face the climate change realities in the coming years shunning the present business-as-usual approach.