COP27: How responsible are rich countries for global warming?

The United Nation's 27th annual climate summit, COP27, opened on Monday in Sharm el-Sheikh, Egypt. The event, which should pressure governments into ramping up their decarbonization pledges, will be the first to put the issue of financial compensation for damages suffered by developing countries at the top of the agenda. What is at stake and who are the movers and shakers of climate finance?