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Case Study: Syria

How the Syrian civil war exposed the Security Council's deepest divisions and what it teaches about the limits of collective security.

The Syrian civil war, which began in 2011, became the defining failure of the Security Council in the 21st century. Russia vetoed or co-vetoed at least 16 resolutions on Syria between 2011 and 2023, making it the most vetoed conflict in modern Council history. China joined Russia on most of these vetoes. The result was a Council unable to take meaningful action as the conflict killed over 500,000 people and displaced half the country's population.

The conflict began as part of the Arab Spring, when protesters demanded democratic reforms from President Bashar al-Assad. Assad's government responded with violent repression, which escalated into a full civil war involving numerous armed groups, foreign interventions by Russia, Iran, Turkey, and the United States, and the rise and fall of the Islamic State. Each layer of complexity added new obstacles to Council action.

Case Study: Syria | Model Diplomat