The Montreal Protocol (and its amendments) concerning the phasing out of ozone-depleting substances (ODS).

SO2: the reduction of emissions to the level of permissible burden the reduction of the emission level by 45, 60 and 70% by 2000, 2005 and 2010 respectively with regard to the reference year 1980 (the Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Further Reduction of Sulphur Emissions);

The UN Convention on Long-Range Transboundary Air Pollution (UN/ECE CLRTAP), with several protocols (the second refers to the control of sulphur dioxide; new protocols are in preparation, e.g. for VOC, SO2, NOx, heavy metals, POP, etc.).

In accordance with the second protocol on sulphur, Slovenia has assumed the obligation to reduce annual SO2 emissions to 93 000 tonnes in total by 2005, and to 70 000 tonnes by 2010. The 1996 emission was 110 000 tonnes; in 1997 the emission increased, totalling 120 391 tonnes.

The Kyoto Protocol to the UN Framework Convention on Climate Change binds Slovenia to reduce its emissions of greenhouse gases by 8% with regard to the reference year 1986. The quantity of CO2 emissions, the major greenhouse gas, began to fall after 1986, mainly due to economic difficulties.

The appropriate legal documents are the Constitution of the Republic of Slovenia and international documents on human rights in which the exercise of fundamental citizen's rights is never contingent on duties, moreover, any form of enforcement is explicitly prohibited (cf. the Constitution of RS 1992: Article 41; Universal Declaration of Human Rights 1948: Article 19; the Declaration of the Rights of Man and of the Citizen 1789: Article 10; the Protocol to the Convention for the Protection of Human Rights and Fundamental Freedoms 1950: Article 3; the equation of a right and duty can only be found in the Constitution of ex-Yugoslavia, The Constitution of SFRY 1974: Article 173).