Applying Legitimacy & Interdependence in Paper 1 Source Responses
Two concepts students consistently underuse — and the guide that shows you exactly how to apply them to earn marks in Q2, Q3, and Q4.
Why These Two Concepts Are Different
Power and sovereignty feel concrete to most students — they involve states, armies, and borders. Legitimacy and interdependence are often vaguer in students' minds, and that shows in their responses. They apply them as assertions ("this lacks legitimacy") rather than as analytical tools. This guide fixes that.
The core analytical move: Don't just label legitimacy or interdependence as present. Explain what type of legitimacy is being claimed or contested, why that matters politically, and what the source reveals about how legitimacy or interdependence functions in this context. That is what earns marks in the top band.
LEGITIMACY: What It Means and How to Use It
Definition
Legitimacy refers to the perceived rightfulness or justification of political authority, action, or rule. An actor or institution has legitimacy when those affected accept that it has the right to make binding decisions. Legitimacy can be legal (based on law), democratic (based on popular consent), traditional, or normative (based on shared values).
Four Types of Legitimacy
Legal Legitimacy
Authority derived from law, treaty, or constitutional order. The most formal type — but legal authority and perceived legitimacy can diverge sharply in practice.
Democratic Legitimacy
Authority derived from popular consent — electoral mandates, referenda, or representative institutions. Contested when governments act against majority preferences.
Normative Legitimacy
Authority derived from shared moral or political values — human rights norms, international humanitarian law, the Responsibility to Protect. Institutions and actors can gain or lose this type rapidly.
Performance Legitimacy
Authority derived from delivering outcomes — economic growth, security, public services. Common in non-democratic contexts where formal democratic legitimacy is absent.
Worked Example: Three Levels of Response
Excerpt from a UN Human Rights Council report on Myanmar, 2022.
"The military junta's systematic violence against civilians, including the burning of villages and the displacement of over 600,000 people since the coup, constitutes a profound breach of the state's responsibility to protect its own citizens and of its obligations under international humanitarian law."
Source C illustrates the fundamental distinction between legal and normative legitimacy. The Myanmar junta possesses formal legal authority — it controls state institutions, deploys armed forces, and exercises internal sovereignty — yet Source C frames its actions as a "profound breach" of both its obligations to its citizens and international humanitarian law. This framing is analytically significant: it reveals how international institutions like the UN Human Rights Council function not merely as observers but as legitimacy-conferring and legitimacy-withdrawing actors. By publicly documenting the junta's conduct, the report contributes to a process of normative delegitimisation that exists independently of the junta's legal power. This also demonstrates performance legitimacy operating in reverse: when a state demonstrably fails its foundational obligation — the protection of civilians — it loses not only normative legitimacy but the rational-instrumental justification for its authority. For a researcher, Source C is valuable as evidence of how international institutions translate human rights violations into claims about political legitimacy.
Sentence Stems for LEGITIMACY
- "This source challenges the legitimacy of [actor] because it reveals a gap between [legal authority] and [normative/democratic legitimacy]..."
- "The distinction between [legal legitimacy] and [normative legitimacy] is significant here because..."
- "By [specific action/claim in source], [actor] is attempting to construct legitimacy through [mechanism], which is limited because..."
- "This reveals how legitimacy is not fixed but contested — [actor A] claims legitimacy through [basis] while [actor B] challenges it by..."
INTERDEPENDENCE: What It Means and How to Use It
Definition
Interdependence refers to a condition of mutual reliance between actors — states, institutions, or non-state groups — in which actions or decisions by one actor affect others. Interdependence can be economic, political, environmental, or security-based. It does not imply equality — interdependence can be asymmetric.
Critical Distinction
Interdependence is not the same as cooperation. Interdependence can produce vulnerability, conflict, and leverage as readily as mutual benefit. Students who write "this shows that states cooperate because they are interdependent" are missing the analytical point. The politically significant question is: who bears more of the vulnerability?
Three Forms of Interdependence
Economic
Trade relationships, investment flows, and supply chains that create mutual reliance. When asymmetric, the more dependent actor faces coercion risk.
Security
One state's security choices — alliances, arms programs, force deployment — directly affect the security calculations of others. No state is strategically isolated.
Environmental
Transboundary consequences of environmental decisions — climate emissions, river management, pollution — that no state can address unilaterally.
Worked Example: Three Levels of Response
Excerpt from an International Energy Agency report, 2022.
"Europe's dependency on Russian natural gas — which accounted for 40% of its gas imports before the war — has proven to be a significant strategic vulnerability. The weaponisation of energy supply by Russia has forced European states to rapidly diversify supply chains, accelerate renewable deployment, and renegotiate long-standing energy partnerships."
Source D provides critical evidence for challenging liberal internationalist assumptions about economic interdependence. The liberal argument holds that deep trade and energy relationships create mutual vulnerability that deters conflict; the source shows precisely the opposite — that Europe's 40% dependency on Russian gas became a tool of coercion once the political relationship deteriorated. This reveals how economic interdependence, when asymmetric, can function as a form of structural power: Russia's capacity to "weaponise" energy supply derived directly from European states' accumulated dependency, which in turn reflected decades of policy choices that prioritised economic efficiency over strategic resilience. The consequence — forced diversification, accelerated renewable investment, and renegotiated partnerships — demonstrates that interdependence generates not just vulnerability but political transformation, compelling states to restructure their economies in response to geopolitical developments they did not anticipate. For a researcher, this source is significant because it documents in real time the moment at which a theoretical concept (asymmetric interdependence) produced measurable political and economic consequences.
Sentence Stems for INTERDEPENDENCE
- "This source reveals that interdependence between [actors] is asymmetric because [actor A] bears disproportionate vulnerability, which means..."
- "The [economic/security/environmental] interdependence visible in this source has created [vulnerability/leverage/constraint] because..."
- "This challenges the assumption that interdependence produces mutual benefit, because in this case it has enabled [actor] to..."
- "The consequence of this interdependence for [actor]'s sovereignty/autonomy is that it limits the ability to..."
Combining Both Concepts in a Q3 Comparison
The following is a full top-band Q3 response comparing Source C and Source D using both legitimacy and interdependence. The question is:
"Compare the perspectives presented in Source C and Source D on the relationship between state power and accountability in the international system."
Model Q3 Response — Top Band
Full ComparisonSimilarity
Both Source C and Source D share a common underlying theme: they document instances in which the actions of powerful states or governing actors produce consequences that constrain or harm others — and in doing so, they both implicitly raise questions about accountability. Source C presents the Myanmar junta's violence as a breach of binding legal and normative obligations; Source D presents Russia's weaponisation of energy supply as a transformation of economic interdependence into a geopolitical instrument. In both cases, the sources suggest that unchecked power — whether military or economic — operates without adequate accountability mechanisms.
Difference 1 — The Mechanism of Accountability
However, the two sources differ significantly in the mechanism through which accountability is framed. Source C invokes normative legitimacy: the UN Human Rights Council frames the junta's actions as a breach of international humanitarian law, implying that international institutions have the authority to assess and challenge state conduct. By contrast, Source D does not invoke normative frameworks — it frames accountability in terms of strategic consequence: Europe's forced diversification is presented not as a moral response to Russia's conduct but as a practical adaptation to geopolitical reality. Whereas Source C implies that the international system has normative resources to constrain illegitimate state behaviour, Source D implies that the principal mechanism is strategic adjustment, not moral censure.
Difference 2 — Direction of Vulnerability
A further distinction is the direction of vulnerability. In Source C, it is civilians who bear the consequences of the junta's exercise of power — ordinary citizens face displacement and violence as a result of a state's internal decisions. In Source D, it is states — specifically European governments — that bear the consequences of asymmetric interdependence; the vulnerability is political and economic rather than physical. This distinction is analytically significant: it reveals that accountability in the international system operates differently depending on whether the affected parties are individuals or states, and whether the harm is direct (violence) or structural (dependency exploitation).
Before You Submit Your Q3 — Check These 5 Things
- Does your response use explicit comparative language — "both", "whereas", "unlike", "by contrast"?
- Have you found at least one genuine similarity — not just "both are about politics"?
- Have you found at least two differences and explained why each difference is politically significant?
- Have you used specific evidence from both sources — not just general impressions?
- Have you linked the comparison to a concept (legitimacy, interdependence, power, sovereignty) at least once?
Quick-Reference Card
Screenshot or print this card for desk reference during revision and timed practice.
Legitimacy & Interdependence — Paper 1 Reference
Key definitions, distinctions, and sentence stems for analytical source responses
Legitimacy
Legal
Authority from law and treaty — the most formal type. Can diverge from normative legitimacy.
Democratic
Authority from popular consent — electoral mandates, referenda.
Normative
Authority from shared values — human rights, international humanitarian law, R2P.
Performance
Authority from delivering outcomes — growth, security, services.
Sentence Stems
Interdependence
Economic
Trade, investment, supply chains. Asymmetric = potential for leverage and coercion.
Security
Each state's security choices affect others. Alliance decisions are never purely internal.
Environmental
Transboundary consequences — climate, water, pollution — requiring collective action.
Key distinction
Interdependence ≠ cooperation. It can produce vulnerability, leverage, and conflict.
Sentence Stems
Ready to Test These Concepts Under Timed Conditions?
The full TopBandGlobalPolitics program includes timed practice sets, mark-band annotated model responses, and guided concept application for all four Paper 1 question types.