The big idea: Political interdependence is the decision-making side of interdependence — states tie their choices together through treaties, alliances and international organisations like the UN, so they no longer decide everything alone.
When a state signs a treaty or joins an alliance, it binds its future decisions to others. It gains support and a voice — but gives up some freedom to act however it likes. That trade is the heart of political interdependence.
- Treaties — binding agreements that commit states to act (or not act) in certain ways.
- Alliances — promises of mutual support, especially in defence (e.g. NATO).
- IGOs — bodies like the UN where states make decisions together.
- Shared rules and norms — expected ways of behaving that most states follow.
Give a little, gain a lot: Political interdependence is a bargain: a state accepts some limits on its freedom in return for security, influence and cooperation. A small state gains a voice it would never have alone; a large state gains allies and legitimacy.
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The clearest example of political interdependence is a defence alliance, where states promise to defend one another. The best-known is NATO.
Case study — NATO and collective defence: NATO is a military alliance of many states built on Article 5: an armed attack on one member is treated as an attack on all. Members tie their security decisions together — an attack on a small member could pull the most powerful members into a war, and every member gains the protection of the whole alliance.
NATO shows the bargain of political interdependence. Members give up some freedom (they can be drawn into others' conflicts and must coordinate defence) but gain far greater security than any could have alone. Their decisions are now tied together.
The key point: Political interdependence means states bind their decisions through treaties, alliances and IGOs. They accept limits on acting alone in exchange for security, influence and cooperation — NATO's 'attack on one is an attack on all' is the textbook case.
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Does political interdependence make states safer and stronger, or does it trap them? Weigh both sides.
Link it up: Political interdependence links to sovereignty (treaties limit free decision-making), power (alliances multiply a state's strength) and global governance (IGOs are where states tie their politics together to solve shared problems).
How political interdependence comes up in Paper 1: A Paper 1 source might show states tied together by a treaty or alliance. The idea is that they gain security and influence but give up some freedom to act alone.
With reference to a source and one example you have studied, explain the bargain at the heart of political interdependence.
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Easy marks to lose: 1. Only naming the UN. Include treaties and alliances too.
2. One-sided answer. Show both the gain (security/influence) and the cost (less freedom).
3. No real example. Use NATO and Article 5.
4. Confusing it with economic ties. Political = treaties, alliances, IGOs.