Denis Dutton (of Arts and Letters Daily fame) and Wolfgang Kasper argue that the Kyoto Protocol is more about European protectionism than about actually protecting the environment:

Kyoto activism is in reality not about saving the world. It is about exploiting Green sympathies and justified environmental concerns to convince the world that it should accept a new form of European protectionism.

I agree, which should come as no surprise, since the same argument appeared in an article that economist Bruce Yandle and I co-authored in the Harvard Environmental Law Review last year.