Associated Press: President Barack Obama, with China’s leader at his side, lifted his sights Tuesday for a broad interim accord at next month’s climate conference that he said will lead to immediate action and "rally the world" toward a solution on global warming. Obama and President Hu Jintao talked of a joint desire to tackle climate change, but failed to move off differing positions on an root issue that could block a deal at the 192-nation conference in Copenhagen: how much each country can …