Ryan Avent tackles Waxman-Markey and climate change once more:

... it will be difficult to get every last microstate to sign on to a climate agreement, but it's obviously not necessary to get every last microstate to sign on to a climate agreement. The Vatican's impact on global emissions isn't worth discussing or pitching a fit over. In fact, there are fewer than ten relevant players, and only two really relevant players not already committed to reductions -- the US and China. Given that climate negotiations are part of a repeated game between the two great powers (that is, they're more or less constantly talking about one economic or political issue or another), it seems very likely indeed that an American pre-commitment to emission reductions would facilitate a similar Chinese commitment.

One of his commenters asks:

What India isn't relevant? How so?

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