The Montreal Protocol (https://en.wikipedia.org/wiki/Montreal_Protocol https://en.wikipedia.org/wiki/Montreal_Protocol) Is one of the few examples of an effecti

The Montreal Protocol (https://en.wikipedia.org/wiki/Montreal_Protocol https://en.wikipedia.org/wiki/Montreal_Protocol) Is one of the few examples of an effective international environmental agreement. In some sense all subsequent international treaties seek to emulate it with less success. The fact that it was a somewhat niche set of compounds and the fact that patents related to these substances were expiring is probably a large part of why this worked. Trying to replicate the economic conditions for such an agreement is a good starting point.