Fair and Equitable Treatment Between the International and National Rule of Law

摘要

Promoting the rule of law is a potentially strong legitimating narrative for international investment law. Illustrating the interlinkage, the ubiquitous 'fair and equitable treatment' (FET) standard embodies distinctly rule of law requirements. But these requirements remain open-textured and allow understanding their meaning in either more 'international' or 'national' way. An 'international' understanding - detached from the host State's vision on how the rule of law should look like - should remain dominant. But I argue that decision-making under the FET standard should also involve a systematic engagement with how these requirements would be understood in the host State's law and how they were complied with from that perspective. Whilst not determinative for establishing a breach, this assessment better respects the expectations of the parties, strengthens the persuasiveness of findings and helps enhance the national rule of law as a key contributor to the ultimate goal of investment protection - economic development.