The world is likely to see a comprehensive global warming deal, instead of a political declaration on Dec 18, when the United Nations climate change summit ends.

Leaders from China and the United States yesterday lit up hopes for success at the Copenhagen climate change conference by vowing to look for a comprehensive deal to battle global warming amid dominating expectations that the international community can only achieve a political framework.

US President Barack Obama said the US and China are looking for a comprehensive deal that will "rally the world".