"The biggest success is an agreement which will prevent fast deforestation and encourage reforestation," Jordan told the STA on Sunday, adding that developed countries will financially help developing countries preserve their forests.

According to her, the outcome of the talks as regards other fields is rather poor. The agreement among the negotiators does not inspire much confidence that an agreement will be reached in two years which will truly limit the warming up of the atmosphere to a maximum of two degrees Celsius, she added.

"There is hope however that politicians...will be able to reach in 2015 a similar amount of responsibility and ambition to act against climate change," Jordan remained optimistic.

Also to label the outcome of the conference as modest was the country's leading climatologist Lučka Kajfež Bogataj. She told the STA that a "very little has been achieved" and that the talks revealed gaps among countries.

Kajfež Bogataj, who is a member of the UN Intergovernmental Panel for Climate Change (IPCC), noted that the conference showed that there is a lot of distrust and a lack of political will for an environmental breakthrough.

According to her, the failure is the most obvious in the most important issues, for example the question of how much energy from fossil fuel will be used in the coming decades. "Developing countries still think that others must make the first step".

The purpose of the two-week conference was to sort out the disagreements so that a new climate change agreement could be signed in Paris in 2015, which would enter into force in 2020 and replace the existing agreement.