International environmental law
Question  1:
  Why  does international environmental law generally form part of the international  law of cooperation? Can you think of some principles of international  environmental law that could be said to be part of the international law of  coexistence?
  
Guidance:
  The question asks the students to situate  international environmental law within the two structures of international law  discussed in Chapter 1. The book notes that international environmental law is  by and large part of the international law of cooperation because it is an area  that is not inherently of interest to more than one state and one in which  states have decided to cooperate with each other in order to fulfil certain  goals of common interest. It also asks students to consider certain principles  of the law that could potentially be said to belong within the law of  coexistence. A possible example could be the “no harm” or “due diligence”  principle as reflected in, inter alia,  the seminal Trail Smelter case. 
Question  2: 
  Can  you think of some concrete examples of where environmental law overlaps with  other fields of public international law? 
Guidance:
  The question concerns the fact that international  environmental law is not an inherent independent legal discipline but instead  covers all those parts of international law— whether public or private law—  that can be said to relate to the environment. As the book notes, there is  substantial overlap between international environmental law and other fields of  international law and the students are asked to identify some examples. As  Chapter 8 illustrates, there is, for example, an overlap with certain parts of  the law of the sea, such the issue of protection of marine life and overall  marine protection. There is also substantial overlap with international  economic law and human rights law. 
Question  3: 
  Why  is there often a tension between environmental protection and economic  development? Can you think of some examples of where this tension is visible? 
Guidance:
  The question encourages students to consider the  tension between environmental protection and economic development. The book  notes how initial regulation of the environment was focused on the protection  of the environment as an economic resource and that it was not until later that  it began to emphasize environmental protection as a whole. The chapter contains  numerous examples of the tension between environmental protection and economic  development. In the historical overview, for example, it notes that the extent  to which developing states are free to exploit their own natural resources has  been a core cause of contention in the development of the law. The tension is  also reflected in a number of the SDGs. Perhaps the best example of this is the  principle of sustainable development that seeks to ensure, among other things,  a wise and sustainable use resources and the integration of environmental  considerations in economic development plans. Another illustrative example is  the debate on how to combat climate change and who holds the greatest  responsibility for limiting their emission of greenhouse gases.    
Question  4: 
  The  chapter notes that some of the basic principles of international environmental  law are merely guiding principles. Does this mean that they are not legally  binding? 
Guidance:
  The question asks the students to consider the legal  status of many of the instruments in international environmental law and to tie  the debate to the discussion of sources of international law in Chapter 2. The  book notes that the field is rich with non-binding instruments of a “soft law”  nature and the students should note the inherent binary nature of international  legal sources. Thus, in themselves, such soft law instruments are not legally  binding. They should also refer to the debate about “soft law” in Chapter 2 and  note that such instruments may – over time – assist in the formation of  customary law and therefore legally binding instruments.
Question  5:
  Can  you provide some examples of the techniques used in the treaty-based regulation  of international environmental law? 
Guidance:
  The question forces the students to consider the many  different approaches to regulating the environment. The book notes that  international environment law is characterized by an abundance of so-called  framework conventions that do not exhaustively regulate a topic but instead  establish an organizational entity that is tasked with adopting the substantive  regulation. The book also makes reference to treaties that adopt a ‘list  technique’ whereby the treaty-based obligations are tied to periodically  updated lists in protocols or annexes. Another example of a treaty-based  approach to international environmental law mentioned in the book is that of  treaties that contain a differentiation in the substantial obligations imposed  on the parties. 
Question  6:
  Why  are the traditional principles on state responsibility and compensation  sometimes ill-suited for enforcing international environmental law?
Guidance:
  The question asks the students to consider the  particular challenges associated with enforcing violations of international  environmental law. The book notes that the usual approaches to state  responsibility and reparation for damage in international law are difficult to  apply to environmental damage because it may be difficult to draw a causal link  between an act (or omission) and environmental damage and because environmental  damage in many cases is the result of progressive acts or omissions by a  plurality of states that may have contributed to the damage in an unequal  manner. The book also brings attention to the difficulty of appropriate  compensation for environmental damage and to the problem of applying the  traditional approaches to state responsibility and compensation in cases where  a breach of an environmental obligation is due to a lack of technical or  financial ability to prevent violations of the law.
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