Any other country would be crazy to agree to that since it’s unquantifiable to compare the effects of oil from Saudi Arabia, versus trees in Brazil, versus factories in China, etc.

At the root of the issue is the fact that since humans aren’t able to measure the damage and see all the knock on effects of their actions, many large scale environmental and societal costs are externalized. And if you don’t take advantage of that, then someone else will and win in the market with lower prices.