While the US and its allies have had a monopoly on drone technology until recently, the uptake of military and civilian drones by a much wider range of state and non-state actors shows that this playing field is quickly levelling. Current international agreements on arms control and use lack efficacy in responding to the legal, ethical, strategic and political problems with military drone proliferation. The huge expansion of this technology must push the international community to adopt strong norms on the use of drones on the battlefield.