Last minute wording change from "coal phase out" to "coal phase down". Many country delegations upset but wanting to not scuttle the whole deal they begrudgingly went along with it. Delegates from island nations calling the whole thing a failure.
Sorry can't find an actual article on this, just watched it live on Al Jazeera
And these international agreements on climate change go back to at least 1992. The world has burned through three decades of compromise, and none of those half-measures have ever been met anyway.