Spiegel: It took just hours for the White House to begin back-pedalling on the Bali climate negotiations breakthrough. One minute, US head of delegation Paula Dobriansky was agreeing to a blueprint for a new international accord to replace the expiring Kyoto Protocol. The next minute, the White House press secretary released a statement indicating that Washington has "serious concerns" about the agreement reached on the Indonesian island of Bali. The release made it clear that the US …