Rio + 20: What Difference Has Two Decades Made to State Practice in the Regulation of Invasive Alien Species?

This Article collects and analyzes information available from the Convention on Biological Diversity National Reports to consider what members themselves have identified as their regulatory strengths and weaknesses. Against this backdrop, the Article evaluates the effectiveness of international environmental law in guiding domestic regimes, highlighting that where international law is imprecise or inconsistent, it can hinder the development of successful State practice.