What happened in Copenhagen: This week's Obama disagrees with last week's Obama

Views on China’s Role in the Greenhouse - Dot Earth Blog - NYTimes.com

President Obama on “PBS NewsHour”:

I think that people are justified in being disappointed about the outcome in Copenhagen. What I said was essentially that rather than see a complete collapse in Copenhagen, in which nothing at all got done and would have been a huge backward step, at least we kind of held ground and there wasn’t too much backsliding from where we were.
...But I make no claims, and didn’t make any claims going in, that somehow that was going to be everything that we needed to do to solve climate change. And – and my main responsibility here is to convince the American people that it is smart economics and it is going to be the engine of our economic growth for us to be a leader in clean energy.

And if we pass a bill in the Senate, reconcile it with the House, that says we are going to invest in wind energy and solar energy and we’re going to be the guys who are producing wind turbines, and we’re going to be the folks who are producing solar panels on rooftops, and we’re going to be the country that is retrofitting all its homes and businesses so that we are 30 percent more energy-efficient than we are right now, that produces jobs that can’t be exported; it reduces our dependence on foreign oil; it is good economics; it will increase our exports – oh, and by the way, it also solves the climate problem. And that is, I think, an argument that I’m going to be making not just next year but for several years to come.

[The current Obama seems to strongly disagree with the Dec 18, 2009 Obama]: Remarks by the President during press availability in Copenhagen | The White House

[Obama] Today we've made meaningful and unprecedented -- made a meaningful and unprecedented breakthrough here in Copenhagen.