The international developments over the last century, the implementation of international rules and the interaction between different fields of international law have fascinated many legal minds. The expansion of international investment law in particular is occurring at such speed and in such a...

The author introduces Gehring's call for a multi-lateralization of Impact Assessments (IAs). IA processes in Canada, the US and the EU illustrate the complex nature of IAs and their challenges in a rapidly evolving international investment law and policy regime. IAs have expanded to include...

The paper, the editors' introduction to the volume, maps out the main challenges and opportunities resulting from the move, in the past decade, from free-standing investment protection treaties (BITs) towards more broadly-focused treaties addressing integration in trade and investment