ABSTRACT. Lawrence affirms that, in addition to concerns over sovereignty, there are also differences of emphasis on the precise nature of the WTO's legal order. Fadiga and Fadiga-Stewart note that both the GATT and the WTO as institutions have created norms or standards of behaviour and set up rules and procedures concerning global trade between nations. Zimmermann writes that trade agreements on the basis of reciprocity are instruments used by governments to achieve trade liberalization. Pauwelyn examines the general relationship between public international law and WTO law, and assesses the role of public international law in WTO.