Leaders from Brazil, Germany, France, Britain and Australia are among those who have "responded positively" to the invite, Rasmussen said during his party's annual conference in the central city of Odense.

Other leaders had also given positive signs they would attend, even if they had not yet confirmed officially, Rasmussen added.

"This shows that heads of state and government are ready to fly in," the premier said.

They had realised "the political momentum is pointing towards Copenhagen" as the place where an ambitious climate deal could be struck, he added.

On November 12, the Danish prime minister invited the 191 other world leaders from United Nations member states to participate in the key talks which run from December 7-18 in Copenhagen.

World leaders will try at the summit to thrash out a global treaty on tackling climate change to replace the Kyoto Protocol, whose obligations to cut carbon emissions expire in 2012.

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