In addition to far-reaching conventions such as the United Nations Framework Convention on Climate Change (UNFCCC), there are agreements on certain subjects, such as the Convention on the Conservation of Migratory Species, as well as on certain regions, the Convention on the Protection of the Black Sea against Pollution. These are not controlled by the organs of the United Nations, but by specialised organisations set up by the conventions. 1.12 Management Challenges. Governments around the world are facing the challenge of managing an increasing number of increasingly complex international environmental agreements. According to other national audit institutions, the assessment of the implementation, compliance and effectiveness of these agreements is complex and is often plagued by various problems. . . .