The rich, developed countries are supposed to help the poorer countries cope with climate change by providing money and expertise to help them move away from carbon based energy sources. It involves the transfer of trillions of dollars from rich to poor nations.
The difference is....unlike charitable giving, which is what Jesus advocated....what the president and the pope are pushing is extortion based on manufactured guilt (over being wealthy, successful, thriving, etc. as a nation). And that is anything BUT charity. It's just the usual leftist meme of punishing success at the expense of the failed. And a blatant robbing of capitalist nations, of course.
For instance, how much $$$ is China going to be expected to fork over? Zilch, I'm betting...since they aren't even expected to curb their massive and ongoing pollution. The game is fixed/rigged.