For every topic here, ask how political power and rules shape cooperation, markets, or peaceful order; who gains and who bears the costs; and what limits actually stand in the way of implementation. For an institution specifically, focus on its decision mechanism and function; for a legal or diplomatic tool, explain how compliance or bargaining is actually encouraged in practice.
A. Three Views of International Political Economy
Mercantilism (economic nationalism) sees economic power as closely tied to state power and security; states protect strategic industries, seek favourable trade positions, and use economic tools for explicitly geopolitical goals — modern economic nationalism does not exactly reproduce early-modern mercantilism, but shares its emphasis on state power as the organizing goal. Economic liberalism instead stresses markets, specialization, and open exchange as sources of welfare and, often, mutual interdependence, supporting property rights, competition, and trade, while modern liberal political economy accepts varying levels of regulation and social protection alongside this — the standard liberal argument is that interdependence raises the cost of conflict between trading partners, though this comes with genuine vulnerabilities of its own. Neo-Marxist IPE studies how global capitalism creates class and centre-periphery inequalities, focusing on ownership, unequal exchange, multinational capital, and historical structures that can reproduce dependency over time — world-systems and dependency approaches overlap substantially but are not identical, and a fair criticism of this whole family of approaches is that outcomes among developing states in practice vary considerably more than a single dependency framework would predict.
Imperialism theories connect external expansion with political and economic power; dependency theory argues that peripheral economies can become structurally subordinated to core economies; interdependence instead highlights mutual sensitivity and vulnerability among genuinely connected states. Complex interdependence theory specifically stresses multiple channels and issue areas in which military power is not always the dominant tool — the key distinction worth holding onto is that dependency emphasizes hierarchy between unequal parties, while interdependence can be asymmetric without being automatic domination of one side by the other.
B. Nationalism, Internationalism, and Globalization
Nationalism makes the nation a central political community, often linking national identity with self-determination or full statehood; it powered anti-colonial movements and state formation across the twentieth century, but exclusionary forms of it can equally produce interstate conflict — civic and ethnic forms of nationalism, and its relationship to sovereignty, are worth distinguishing clearly here as they were in the political-thought material earlier. Internationalism argues that states and peoples share genuine interests requiring cooperation beyond narrow nationalism; it appears in collective security arrangements, international law, formal institutions, labour and human-rights movements, and regional or global governance more broadly — the enduring tension it navigates is between the benefits of global cooperation and each state’s continued national autonomy. Globalization intensifies cross-border interconnection in economy, information, culture, and politics together; it creates real opportunities for trade, technology transfer, and cooperation, but also transmits crises rapidly, increases vulnerability, and can provoke genuine nationalist backlash — its drivers, effects on sovereignty, distributional inequality, global value chains, and the resulting “governance gap” (global problems outrunning available global governance capacity) are the standard analytical themes.
C. Diplomacy, International Law, and Arms Control
Diplomacy is the management of international relations through communication, negotiation, representation, and bargaining; it can be bilateral, multilateral, summit-level, shuttle, public, or track-two (unofficial, non-governmental) in form, though formal diplomacy always remains ultimately state-authorized — effective diplomacy combines information-gathering, persuasion, compromise, and deliberate signalling together, and it is worth distinguishing diplomacy (the tool) from foreign policy (the broader goal diplomacy serves). International law creates rules governing state conduct, treaties, the use of force, humanitarian protection, and many other forms of cooperation; its enforcement is genuinely decentralized compared with domestic law, but compliance is nonetheless supported by reciprocity, reputation, institutions, domestic incorporation of international obligations, and shared interests among states — the UN Charter’s use-of-force framework and available dispute-settlement mechanisms are the standard reference points here.
Arms control manages the types, numbers, deployment, or use of weapons; disarmament seeks their reduction or outright elimination; non-proliferation seeks specifically to prevent the further spread of weapons, especially nuclear weapons, to new possessors. The nuclear non-proliferation regime includes treaties, IAEA safeguards, export controls, and shared norms, and it faces persistent tensions between non-proliferation goals, disarmament obligations owed by existing nuclear-weapon states, peaceful nuclear use rights, and the acknowledged unequal status the regime grants nuclear-weapon states compared to everyone else — the NPT’s three pillars (non-proliferation, disarmament, and peaceful use) are the standard reference framework for analyzing this whole area.
D. Major International Institutions
The United Nations is the central universal intergovernmental organization for peace and security, development, human rights, and international cooperation; its main organs include the General Assembly, Security Council, ECOSOC, the International Court of Justice, and the Secretariat (the Trusteeship Council suspended operations after completing its original mission). Security Council veto power for its permanent members makes great-power politics genuinely central to collective security under the UN system, which is precisely why UN reform debates keep returning to Council composition and veto rules specifically. The IMF promotes international monetary cooperation and provides financing to members facing balance-of-payments problems, under programme conditions and ongoing surveillance — it is not a development bank in the same sense the World Bank is, and its tools center on lending arrangements, surveillance, and technical assistance rather than long-term development financing. The World Bank Group instead finances development and provides research and technical support through several affiliated institutions: IBRD lends mainly to middle-income and creditworthy countries, while IDA provides concessional (below-market) financing specifically to poorer countries, with other Group institutions supporting private investment, guarantees, and investment-dispute mechanisms — distinguishing the World Bank’s development mandate from the IMF’s monetary-stability mandate is a frequently tested distinction. The International Court of Justice (ICJ) is the principal judicial organ of the UN, deciding legal disputes between states that fall within its jurisdiction, and also issuing advisory opinions when authorized UN organs request them; individuals do not directly bring cases as parties before the ICJ, and its jurisdiction over any given dispute depends on the states involved having actually consented to it through an accepted legal basis — the contentious (binding disputes between states) versus advisory (non-binding legal opinions) jurisdiction distinction is central to understanding what the ICJ can and cannot actually do.
IPE, Diplomacy, Law, and Institutions key takeaways: mercantilism, economic liberalism, and neo-Marxist IPE each connect economics to political power differently, and comparing all three on the same case is a strong exam technique. Dependency and interdependence both describe unequal relationships, but only dependency implies a genuine hierarchy of domination. Diplomacy is a tool serving foreign-policy goals, not a synonym for foreign policy itself. International law’s enforcement is decentralized, but real compliance still occurs through reciprocity, reputation, and shared interest, not through a world police force. The nuclear non-proliferation regime balances three genuinely competing goals — non-proliferation, disarmament, and peaceful use — that are not always fully compatible with each other. The UN, IMF, World Bank, and ICJ each perform a genuinely distinct function, and treating them as interchangeable “international institutions” misses what actually makes each one useful.