Why it matters
Ceasefires save lives and open space for aid and negotiations, but they often break down.
Ceasefire in the news
More World terms
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Geopolitics
The way geography, resources and power shape relations and rivalries between countries.
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European Union
A political and economic union of European countries with a single market, shared laws in many areas and, for many members, the euro.
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NATO
A military alliance of North American and European countries whose members agree to defend each other if one is attacked.