The big idea: When, if ever, is violence justified? Most people accept that force is sometimes needed — in self-defence or to stop a genocide — but reject it as a first resort.
The classic framework: Just war theory is the classic framework for deciding when war is morally acceptable, and how it must be fought.
- Self-defence — a state (or people) defending itself against attack.
- Stopping atrocities — using force to halt genocide or mass killing (humanitarian intervention).
- Restoring order — with proper authority, to protect civilians or uphold international law.
- Last resort — only after peaceful options have genuinely been tried and failed.
Two big positions: Pacifism says violence is always wrong, even in self-defence. Just war theory and realism accept that force is sometimes necessary — but just war theory insists it must meet strict conditions, while realism focuses on interests and survival. The exam wants you to weigh these views, not just describe them.
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The hardest real case is humanitarian intervention — using force to stop a government slaughtering its own people. It pits the duty to protect human life against the principle of state sovereignty.
The case FOR humanitarian intervention
When a state is committing genocide or mass atrocities against its own people, outside force may be the only way to save lives; sovereignty should not be a shield for mass murder, so the international community has a responsibility to protect civilians.
The case AGAINST humanitarian intervention
Intervention violates state sovereignty, can be a cover for powerful states' self-interest, often causes more death and chaos, and rarely produces lasting peace — so force in the name of humanity can do more harm than good.
Case study — force to stop atrocities: When a government turns its army on its own civilians, the world faces a hard choice. Doing nothing can allow genocide; intervening with force breaches sovereignty and can widen the war.
History shows two kinds of failure
- Failures of inaction — the world standing by during mass killing.
- Failures of intervention — military action that left chaos behind.
Why this debate matters: This is why the justification of force is one of the deepest debates in global politics. Frameworks like just war theory and the responsibility to protect try to set limits on when force is legitimate.
The key point: Almost no one thinks violence is always justified or never justified. The real question is when and how: just war theory says force needs a just cause, legitimate authority and last resort, and must be fought proportionately and without targeting civilians.
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Is violence ever justified? And can a war be fought justly, or does war always corrupt? Recurring debates. Weigh them.
Why just war theory is useful
It provides clear moral limits: force needs a just cause, legitimate authority and last resort, and must protect civilians and be proportionate — so it condemns aggression and atrocities while allowing genuine self-defence, giving a way to judge specific wars.
Why just war theory is criticised
Critics say it can be abused to dress up self-interested wars as 'just', that its conditions are vague and disputed, and that modern warfare (drones, civilian-heavy conflict) makes proportionality and discrimination hard to apply — so it may excuse as much violence as it restrains.
Two perspectives — weigh them: One view: violence is sometimes justified — for self-defence or to stop atrocities — but only under strict just war limits. Another view (pacifism): violence is never justified, because it kills the innocent and non-violence can achieve change.
What strong essays conclude: Strong essays weigh both. They often conclude that force can be justified in extreme cases as a last resort, but the bar must be very high and the conduct constrained.
How justifying force comes up in Paper 2: A Paper 2 essay might ask whether violence is ever justified, or evaluate just war theory or humanitarian intervention. Weigh pacifism against just war, use the just-cause / proportionality conditions, then judge.
The 15-mark markband (what moves you up)
Bands 1–6
Mostly descriptive; perspectives not identified.
avoid
Bands 7–9
Clear knowledge, but perspectives identified, not explored.
7–9
Bands 10–12
Well-supported argument; perspectives explored.
10–12
Bands 13–15
Balanced, compelling; perspectives explored AND evaluated.
13–15
To what extent is the use of violence ever justified in global politics?
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
Common mistakes: 1. Saying force is always OR never justified. Weigh the middle ground.
2. Only describing just war theory. Evaluate it — including the abuse critique.
3. No real dilemma. Use humanitarian intervention / stopping atrocities.
4. Listing just-war criteria. Test a real intervention against them.
5. No judgement. Conclude on when, if ever, force is justified.