I strongly recommend this book from last fall, there's an extremely thorough recounting of the route that got climate wonks that go to these summits to all quietly embrace the idea that it's ok to pass any announced target as long as there is some lip service to bringing temperatures back down to the target.
Maybe the most aggressively cited text I've ever read, and is a serious investigation into this apocalypse libs and fash are holding hands walking us in to.