... before writing his column today in the NYT, but:

While his conclusion -- that China has to be part of global efforts to control carbon emissions -- is obviously correct and important, his premise -- that no one in China admits this -- does not square with my observation over these past three years.* As it happens, I spent this very day at a conference in Beijing where the first five presentations I heard were about emissions-reductions and sustainability in one specific domestic industry. (Also, I wrote in the magazine, a year ago, about Chinese people and organizations making similar efforts in a variety of other fields.)

If blunt-instrument outside pressure like this column makes it more likely that Chinese authorities will keep making progress, then as a pure matter of power-politics I say: fine. But my guess and observation is that it is just as likely to get their back up -- and encourage the ever-present victimization mentality that makes it less rather than more likely that Chinese authorities will behave "responsibly" on the international stage.

As I've written a million times (most recently here and here and generally here), arguably the most important thing that will happen on Barack Obama's watch is reaching an agreement with China -- or not -- on environmental and climate issues. We'll see what's the best means toward that end.
* Krugman says:

"Each time I raised the issue during my visit, I was met with outraged declarations that it was unfair to expect China to limit its use of fossil fuels. After all, they declared, the West faced no similar constraints during its development; while China may be the world's largest source of carbon-dioxide emissions, its per-capita emissions are still far below American levels; and anyway, the great bulk of the global warming that has already happened is due not to China but to the past carbon emissions of today's wealthy nations. And they're right...But that unfairness doesn't change the fact that letting China match the West's past profligacy would doom the Earth as we know it."

I've heard that Chinese response too many times to count. But it's mainly a throat-clearing prelude to talking-turkey discussions about what the country will and can do, and under what circumstances.

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