Obama in action

After making progress on a pact with Russia to reduce nuclear armaments by 25%, President Obama has nudged climate talks in Copenhagen a bit closer to a deal, albeit one that falls short of what's needed:

The deal came after a dramatic moment in which Mr. Obama burst into a meeting of the Chinese, Indian and Brazilian leaders, according to senior administration officials. Chinese protocol officers noisily protested and Mr. Obama said he did not want them negotiating in secret. The intrusion led to new talks that cemented key terms of the deal, American officials said.