With new and emerging technologies, we hear a lot about killer drones, driverless tanks and autonomous airplanes on the modern battlefield.

One issue of particular concern is the use of what are officially known as lethal autonomous weapons systems (LAWS), which can select and engage targets with force, without human involvement - raising a raft of security, ethical and legal concerns.

What are countries doing to regulate LAWS? And how can international law and the UN respond to this challenge?

To explore these and other questions, the Group of Governmental Experts on LAWS began meeting at the UN in 2017, as Mélanie Régimbal, Chief of the UN Office for Disarmament Affairs in Geneva, explains to UN News’s Nancy Sarkis.