UN Charter

"There is good reason to conclude the United States may have crossed the use of force threshold with this cyber operation."

Part I demonstrated that the United States is likely to struggle to make a convincing argument that economic cyber intrusions carried out against it breach international law. Consequently,…

Iran’s justification for shooting down a US drone suggests a subtle shift in its understanding of international law.

Statements about a US "peacekeeping" force and a mission to counter-Iran raise serious legal questions and threaten to unravel U.S. allies' support for future U.S. operations inside…

The Trump administration's repeated use of the phrase, “threat to international peace and security,” when talking about Iran, should be monitored carefully.

Earlier this month, Senator Tim Kaine made public a letter he wrote to Secretary of Defense Jim Mattis asking for clarification on the meaning of “collective self-defense of…

This week, as U.N. Special Rapporteur on the promotion and protection of human rights and fundamental freedoms while countering terrorism, I submitted my annual report to the…

There has been too little discussion of the enormous risks that counter-terrorism involvement in U.N. peace operations poses for U.N. efforts to maintain and build peace.

For the past few weeks, Rebecca Ingber, Elvina Pothelet, Priya Pillai and I have been engaged in the task of systematizing State reactions to the April 14 air strikes carried out…

Above: People look at drones the Ukrainian government claims it recovered in eastern Ukraine that prove direct Russian involvement in the fighting between Ukrainian troops and…

On April 14, the United States, the United Kingdom and France conducted air strikes in Syria in response to the Syrian government’s alleged use of chemical weapons in Douma.…

Fifty percent more states are added to this database on global reactions to the US, UK, France strikes on Syria last month. What were the international community's true views on…