A crack in Larsen C’s ice shelf in the Antarctic peninsula has been growing at a rapid rate and is poised to become the largest iceberg ever recorded. The Larsen A and B ice shelves have already broken away from the glacier in the 1990’s and 2000’s. The Larsen C ice shelf serves as a layer of protection and structural support for glaciers. When the ice shelf breaks, it will make the glacier even more vulnerable to destruction, leading to sea level rise.
https://www.nytimes.com/interactive/2017/02/07/science/earth/antarctic-crack.html?rref=collection%2Ftimestopic%2FGlobal%20Warming&action=click&contentCollection=science®ion=stream&module=stream_unit&version=latest&contentPlacement=8&pgtype=collection
The countries most affected by an increase of sea level rise tend to be in developing regions of the world, like Bangladesh, India, China, and Vietnam. There’s an ongoing debate of whose responsibility it is to help protect developing countries from climate crises. The majority of carbon emitted that has lead to this point was by industrialized nations and regions, like the U.S., Europe, and now China. But the countries that will be most effected by climate change will be in developing regions like Africa and South Asia.
https://www.cgdev.org/page/mapping-impacts-climate-change