Reactions after slow progress at United Nations climate talks in Bonn, Germany, on 10–14 August

"If we don't have more movement and more consensus than we saw here, we won't have an agreement."

Jonathan Pershing, US lead climate negotiator.

"The best likely outcome in Copenhagen may be an interim agreement nailing down the basic architecture."

Elliot Diringer, vice-president of the Pew Center on Global Climate Change in Arlington, Virginia.

"My fear is that we sign another agreement that doesn't have any teeth."

Kevin Conrad, delegate from Papua New Guinea.

"It would be incomprehensible if this opportunity were lost."

Yvo de Boer, executive secretary of the United Nations Framework Convention on Climate Change.

Sources: New York Times, AP, Bloomberg, AFP