The rules governing world trade are set by the World Trade Organization, the most consequential piece of international economic architecture. This module covers how the WTO works — its principles, its agreements, and its dispute system — and why the multilateral trading order it embodies is now under serious strain, with major consequences for the developing countries that benefit most from a rules-based system.
From GATT to WTO
After the protectionism that deepened the Great Depression, the 1947 General Agreement on Tariffs and Trade (GATT) established a framework for negotiated tariff reduction. Successive 'rounds' of negotiation cut tariffs and expanded coverage, culminating in the Uruguay Round (1994), which created the World Trade Organization (1995) — a permanent institution with a much broader mandate: not just goods (GATT) but services (the GATS), intellectual property (TRIPS), agriculture, and a strengthened dispute-settlement system. The WTO embodies the principle that a rules-based, non-discriminatory trading order serves everyone better than the power-based, beggar-thy-neighbour protectionism it replaced.
The core principles
The rules of the system
Two non-discrimination principles are the heart of the WTO: • Most-Favoured-Nation (MFN) — a country must treat all WTO members equally: any tariff or concession granted to one member must be granted to all. No discriminating between trading partners. (The big exceptions are free-trade areas/customs unions, which can discriminate in favour of members — the preferential-trade module — and special treatment for developing countries.) • National treatment — once goods are inside a country (past the border), imports must be treated no less favourably than domestic products. No discriminating against foreign goods through internal taxes or regulations. Plus: bound tariffs (members commit to maximum tariff levels they won't exceed, providing predictability), reciprocity (concessions are exchanged — I cut my tariffs if you cut yours), and transparency. Together these convert trade policy from arbitrary, discriminatory power plays into predictable, non-discriminatory rules — which especially benefits small and developing countries that lack the power to fend for themselves in a rules-free world. The weak gain most from rules; the powerful gain most from their absence.
Dispute settlement: the crown jewel and its crisis
The binding adjudication that is now paralysed
The WTO's dispute-settlement system was its 'crown jewel' — a binding, rules-based process for resolving trade disputes, with panels ruling on whether a member's policy violates the rules and an Appellate Body hearing appeals. Crucially, rulings were binding and enforceable (via authorised retaliation), so even a small country could win a case against a large one and have it enforced — a remarkable constraint on the powerful. But since 2019 the system has been paralysed: the United States has blocked the appointment of new Appellate Body members (citing concerns about overreach), so the Appellate Body lacks a quorum and cannot hear appeals — meaning any losing party can 'appeal into the void' and escape a ruling. The crown jewel is broken. This is a profound development: the binding enforcement that protected weaker members is gone, and trade disputes increasingly revert to power-based bilateral pressure (tariffs, threats) — exactly the world the WTO was built to escape. For developing countries, the loss of enforceable rules is a serious setback, removing their main protection against the unilateralism of the powerful.
Special and differential treatment
The WTO recognises that developing countries cannot be held to the same obligations as rich ones, through special and differential treatment (S&DT): longer implementation periods, lower obligations, technical assistance, and non-reciprocal preferences (rich countries granting developing-country exports better access without demanding reciprocity — the GSP and AGOA of the preferential-trade module). S&DT is contested: developing countries argue it is too weak and rich countries circumvent it; rich countries argue large emerging economies (China, India) should no longer claim it. The Doha 'Development Round' (launched 2001) was meant to rebalance the system toward developing-country interests (especially on agriculture, where rich-country subsidies hurt African farmers) but collapsed in deadlock, a major failure that left the system's development promise unfulfilled and contributed to the shift toward regional and bilateral deals (the AfCFTA course).
The system under strain
The multilateral trading order faces its gravest crisis since 1947. The symptoms: the paralysed dispute-settlement system; the failure of the Doha Round (multilateral negotiation has stalled, so trade liberalisation has shifted to regional/bilateral deals); the US-China trade war and the return of unilateral tariffs in defiance of WTO rules; the rise of industrial policy and subsidies (the Industrial Policy course) that strain the rules; and 'geoeconomic' fragmentation (trade increasingly shaped by geopolitical blocs). For Africa, the stakes are high: a weakening rules-based system removes the protection that small economies most need, even as the continent pursues its own integration (AfCFTA) partly as a response to a less reliable multilateral order. The trend is from rules toward power — and the powerful, not the weak, gain from that shift.
Exercise
A small African country has a trade dispute: a major economy has imposed a tariff on its exports that appears to violate WTO rules. (1) Explain how the WTO system was designed to let the small country win and enforce such a case, and why that mattered. (2) Explain how the Appellate Body crisis undermines its position. (3) Explain how MFN and national treatment would normally protect the country, and the exception that lets it join AfCFTA. (4) Assess what the strained multilateral system means for the country's trade strategy.