Multilateral Environmental Agreements (MEAs) are the predominant legal method for addressing transboundary environmental problems. Adopted by States, MEAs are standard-settings instruments for effective global environmental protection.

International organizations are playing an increasingly important role in the international legal order. They are active in virtually all fields of human activity, they regularly conclude international treaties and continuously interact with other actors of international law. Nowadays, they wield growing normative powers.

The International Law of Treaties is a set of international principles and rules regulating the conclusion procedure of treaties, as well as the issues of operation, amendments and modifications, termination, suspension and invalidity of treaties. For those involved in the drafting, negotiation and conclusion of international treaties, a sound knowledge of the Law of Treaties is indispensable.

For the adequate implementation of and compliance with MEAs at a national level, there is a need to raise awareness on International Environmental Law (IEL) and develop specific capacities for its implementation at the national level.