Introduction

With increasing globalization and developing countries no longer claiming a NIEO, the so-called 'open-door policy' on foreign investment has become wide-spread and the non-discrimination principle is generally more accepted than in the past. The two typical non-discriminatory treatment standards, that is the most-favoured-nation and the national treatment ones, are usually included in the great number of international treaties, whether bilateral or multilateral, concluded in the field of foreign investment in the last decades. As is well-known, the most-favoured-nation ...