Let's assume the sea water rises and many people are displaced. Where can people go in Bangladesh, for example? EU? US? Australia? Where? When countries have less than 100 years before they're submerged like Bangladesh, who's planning to let them into theirs?
Most Europe-bound Refugee, Migrant Children Face Abuse... Study: Most Europe-bound Refugee, Migrant Children Face Abuse Wednesday 13th September, 2017 - A joint study by the U.N. Children's Fund and International Organization for Migration says up to three-quarters of refugee and migrant children and young people trying to reach Europe are abused, exploited and subject to trafficking. See also: Abuse, exploitation and trafficking 'stark reality' for migrant children trying to reach Europe - UN report 12 September 2017 -- More than 75 per cent of migrant and refugee children trying to reach Europe via the Central Mediterranean route face appalling levels of abuse, exploitation and trafficking, the United Nations Children's Fund (UNICEF) and the International Organization for Migration (IOM) said, calling on the continent to establish safe and regular pathways for migration.
India. Pakistan. Burma. China. Laos. Why should they be forced to relocate to a completely alien place and culture? They should be relocated to the nearest safe place, where there will be far less culture shock for them - they would have enough to deal with as it is. That would be India and/or Pakistan. If the west wants to help, send money and/or personnel to help with the resettlements.
Probably someday or then again we may go into yet another ice age and sea levels will fall. They have been much higher and lower than today so it's a safe bet they will rise or fall, in fact a sure bet. Just as sure is sea levels will not stay the same as they are today.
Well, India and Bangladesh is under water so, it might be forced relocation if the Indian Sub Continent gets submerged.
If all of India goes underwater, we are in big trouble.... You do realize that the Himalayas are partly in India, don't you?