28 June 2025
U.S. Attacks on Iran
Israel and the United States attacked Iran in mid-June 2025 with the aim of ending its nuclear program. Iran counter-attacked. While some world leaders justified what Israel and the U.S. were doing, they did so in line with political deterrence theory, not the plain terms of the United Nations Charter. The lawful use of force in self-defense depends on an armed attack occurring. Concerns over nuclear weapons are to be resolved through treaties and negotiations. Honoring deterrence theory over the law is undermining the surest path to peace. Continue reading >>
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20 June 2025
“Wavering Between Hope and Despair”
Reflections From Within German International Law Scholarship Continue reading >>
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02 June 2025
Peace at What Price?
In recent months, a growing number of voices – from political figures such as U.S. President Donald Trump and Slovak Prime Minister Robert Fico to various public opinion polls – have suggested that a resolution to the war in Ukraine may require Kyiv to cede some of its territory to Russia. These arguments, now gaining renewed attention as peace talks have begun, frame territorial concessions as a pragmatic step toward ending the conflict. Ceding Ukrainian land under these conditions, however, would reward historical revisionism as a geopolitical strategy and set a dangerous precedent in international law. Continue reading >>
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04 April 2025
The Status of the Right to a Clean, Healthy and Sustainable Environment Under Customary International Law
The recognition of a right to a clean, healthy, and sustainable environment remains contested under customary international law. Some view recent UN resolutions as evidence of its emergence, while others argue they merely reinforce existing obligations. The Human Rights Council and General Assembly have acknowledged this right, but states differ on its legal impact. As the International Court of Justice examines the issue, the focus is shifting from recognition to implementation, with institutions now working to monitor and enforce environmental human rights. Continue reading >>24 March 2025
International Law Under Pressure
In this blog post, we document and analyse the numerous apparent breaches of international law that have occurred within the first six weeks of the 2025 Trump administration. What began as an informal discussion at the Lauterpacht Centre for International Law has evolved into this analytical overview. We believe this documentation serves both academic purposes and potentially supports future legal proceedings. While defenders of these actions will undoubtedly offer justifications for what we identify as clear breaches of international law, our analysis aims to provide an assessment based on established international legal principles. Continue reading >>20 March 2025
Respect for International Law
Observance of international law is more important than ever in the current situation in order to maintain and restore world peace. This is especially true for Germany. We call for compliance with Germany’s obligations under international law. Especially at a time when international law is being broken by powerful states, we urgently appeal to decision-makers at federal and state levels not to jeopardize Germany’s commitment to international law. Continue reading >>06 January 2025
Territorial Concessions to the Aggressor
How can Russia’s war of aggression against Ukraine be brought to an end? With recent proposals by the Trump transition team, a possible peace treaty with Ukraine and Russia is gaining renewed attention. Gregory Fox predicts that “territorial transfers […] would likely be at the heart of any agreement”. The rule on coerced treaties (Art. 52 VCLT) poses a major legal obstacle to territorial concessions to an aggressor state. Under that rule, a treaty is void if its conclusion has been procured by an unlawful threat or use of force. That notwithstanding, a treaty invalid under Art. 52 VCLT can be validated by the UN Security Council (UNSC), a solution that is also compatible with jus cogens. Continue reading >>
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13 December 2024
“It looks more like a managed transition than a revolution.”
Five Questions to Michael Meyer-Resende Continue reading >>
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08 December 2024
Paula Escarameia
Paula Ventura de Carvalho Escarameia’s legacy extends beyond classical legal achievements. With a diversified career over decades that got cut short way too soon at the age of fifty, she’s earned global acclaim for her expertise in public international law, especially concerning the situation in East Timor. She believed that public international law was no rigid construct but could and should be changed especially in the areas of self-determination and the protection of human rights – ultimately contributing to the establishment of the International Criminal Court. Continue reading >>
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27 November 2024