Treaties — Interpretation of — Rules of — Function of articles setting out fundamental aims of treaty — Elaboration of fundamental aims to be read as one with them — General principles of law of member States — European Coal and Steel Community Treaty, 1951.

International organization — European Coal and Steel Community — Interpretation of Treaty establishing — Articles setting out fundamental aims of Treaty to be read as a whole — Power of international organization to give predominance to certain of these aims — Interpretation of fundamental aims in light of subsequent provision of Treaty — Whether failure to comply with fundamental aims of Treaty amounts to détournement de pouvoir — Dominant purpose of Treaty.