Case Studies

The 2016 PCA Award in Philippines v. China: Clarifying Maritime Rights in the South China Sea

The 2016 PCA Award in Philippines v. China reshaped maritime law by rejecting China’s nine dash line claims, clarifying the limits of entitlements under UNCLOS, and stressing environmental protection. Beyond doctrine, it reinforced freedom of navigation, empowered smaller states, and continues to influence disputes worldwide.

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The Caroline Incident (1837) and the Self-Defense Principle in International Law

The 1837 Caroline Incident transformed a border raid into a milestone in international law. From Webster’s correspondence with Ashburton emerged the Caroline Test, necessity and proportionality, as enduring benchmarks for lawful self-defense. Nearly two centuries later, these principles continue to guide states in responding to threats across land, sea, and cyberspace.

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Nicaragua v. United States: ICJ’s Landmark Ruling on Sovereignty and Use of Force

The ICJ’s ruling in Nicaragua v. United States remains one of the most influential decisions in international law. It clarified the prohibition on the use of force, strengthened the principle of non intervention, and narrowed the scope of collective self defense. At the same time, it revealed the limits of enforcement when powerful states refuse to comply, making it a lasting reminder of both the strength and fragility of international law.

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