The KSE proposal offers a realistic option for Europe to stiffen pressure on Russia to withdraw from Ukraine and reach a peaceful resolution to the illegal war. Per the proposal, the U.K. and EU member states should push flag states to more frequently adhere to international shipping regulations and guidance. The best way to do so would be by requiring insurance disclosure and enforcing insurance standards through diplomatic pressure, flag state liability, sanctions for underinsurance, secondary sanctions, and physical intervention when it becomes plainly necessary. Coordinated, targeted, and legally tighter actions against the shadow fleet from the U.K. and Europe would strengthen Ukraine’s hand in future negotiations and improve the chances of achieving a just and sustainable peace.