(though international documents like the Rio Declaration are not binding, the Court observed, ''the fact remains that they have a persuasive value and command respect. The Rio Declaration is the product of hectic discussion among the leaders of the nations of the world and it was after negotiations between the developed and the developing countries that an almost consensus declaration had been sorted out. Environment is an international problem having no frontiers creating transboundary effects. In this field every nation has to cooperate and contribute and for this reason the Rio Declaration would serve as a great binding force and to create discipline among the nations while dealing with environmental problems. Coming back to the present subject, it would not be out of place to mention that Principle No. 15 envisages rule of precaution and prudence.'')

(found in ''Reclaiming Democracy: The Strategic Uses of Foreign and International Law by National Courts'' by Eyal Benvenisti, American Journal of International Law, April 2008, Volume 102, Number 2, pp. 261-262)