Agence France-Presse: A hard-fought deal fixing a 2009 deadline for a new treaty to tackle global warming ran straight into trouble Sunday with the United States voicing "serious concerns" over its provisions. As negotiators headed home after two weeks of intense haggling, the White House complained that the agreement did not do enough to commit major emerging economies such as China and India to big cuts in greenhouse gas emissions. It underlined lingering division over how to confront …