Use of Force

President Zelenskyy opposes a “hybrid” tribunal to try the crime of aggression—but can the U.N. create a court without Security Council support?

What international law has to say about other States’ assistance to Russia’s war efforts

Violence in Sudan has reached the level of an armed conflict -- a threshold at which international humanitarian law applies.

To explain the M23 conflict, and what the United States can do to pressure Rwanda to withdraw, we have Daniel Levine-Spound and Ari Tolany.

When it comes to doing the right thing and pursuing the rule of law, the form a tribunal takes should not dictate its ability to function:

The United States should take immediate steps to halt all security cooperation activities with Rwanda until concrete conditions are met.

IHL needs to be respected in the heat of battle. How to achieve that goal - and reduce civilian suffering during hostilities - should become an urgent focus of international attention.

Whatever shape an aggression tribunal takes, we applaud the U.S. position which will likely create momentum to prosecute Russian aggression.

Use of the “overall control” test to attribute Wagner Group conduct to Russia is appealing, but considering the test’s application to other factual scenarios, there is some…

Praise but also a critique of the new U.S. position.

Tensions between Iran and the United States are escalating again following tit-for-tat hostilities in Syria.

The real challenge in the space domain is avoiding escalation in the first instance, such as by reducing threats and developing transparency and confidence building measures.