Afraid U.S. has come to Durban with "Empty Briefcase," Says Keith Allott of WWF

Everything's in play, a lot of confusion, rumours flying around, says Keith Allot of WWF. China is one of the few players coming here and publicly offering to do more, while the U.S. has been intransigent, says Keith Allott of WWF. Live coverage of COP17: http://www.oneclimate.net