Jus ad Bellum

We may be effectively reverting, at least temporarily, to an era of imperial rule. But history has demonstrated that international law has a long memory. Lawyers and historians…

The current round of retaliatory strikes between Israel and Iran casts light on Israel's and Iran’s opposing political strategies, which also have significant legal implications…

The UN Charter, the law on the use of force, and the conditions that body of law places on Ukraine's military operation in Russia's Kursk Oblast.

Nine factors, considered in their totality, would provide a more nuanced understanding of jus ad bellum proportionality and assist States in identifying specific concerns with…

A right to rebellion offers a way to recognize grievances and deescalate the violence of armed groups, and affirms the place of international law in holding States to account for…

An exploration of armed groups and international law outside of conflict; the criminal liability of armed groups and their members; rebel governance; and the role of armed groups…

Expert insight on the legality of recent attacks by Iran and Israel, how domestic politics could impact an Israeli response, and prospects for de-escalation.

"Conversations of this nature are useless if their participants fail to acknowledge their differences of opinion about underlying assumptions."

Russia's justifications for its invasion of Ukraine and the international response demonstrate the enduring relevance of international law.

Under international law, the only possible legal basis for a potential ECOWAS military intervention would be an invitation by Niger extended to ECOWAS to use force on its territory.

The Russian operation almost certainly violated the international law obligation of due regard and, perhaps, the prohibition on using force. Nevertheless, the Biden administration…

In principle, the new policy tightens safeguards for airstrikes and special operation raids. But it contains loopholes that will likely allow business as usual for USAFRICOM in…