Borg told news agency AP that without such a deal "we will end up with a very difficult situation in Copenhagen".
But according to Swedish Radio News, he still has not given up hope that such an agreement could come into place before thee meeting in the Danish capital.
"you could have wished that we would have come further. Now we have got 30 days left until Copenhagen. These talks will conclude when we have reached the stage that there is political will," Borg said.
When asked if this will is going to be there, Borg replied: "that is a harder question. There has to be a bigger flexibility from the developing countries and we have to see to that also other countries than Europe are clear that they will contribute new and substantial means, and that means the Americans in particular. But from India, as well as from China and the US there has to be movement in order for us to move forward.