"The agreement itself contains very few direct requirements, allowing nations to interpret the terms independently and work toward various ill-defined goals. This problem led James Henson, the “father of global awareness of climate change” and an ex-NASA scientist, to condemn the agreement as a fraud. It lacks any enforcement mechanism, instead relying on nations voluntarily to reduce emissions."
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Without an "enforcement mechanism" the Paris Climate Accord has exactly the same fallacy as the League of Nations - it only looks good.
But we all know that the League of Nations fell apart because there was no enforcement mechanism.