ABSTRACT
This chapter looks at how international environmental law has tried to give a response to biological invasions, with particular respect to the role of general principles and of the main international conventions. However, many gaps, overlaps and inconsistencies exist at all levels. Furthermore, the fight against a transboundary threat such as biological invasions stands in a dialectic relationship with the current state-centric international system. Supported by many examples in the practice of states, regional cooperation is thus identified as a promising alternative, capable of reconciling environmental regulation around a nucleus of shared norms, values and interests.
