Ukrainian drones are mining the waters near Crimea, and Britain is testing anti-drone weapons for $0.12.

Ukrainian Sea Baby maritime drones are equipped with new technology to mine the waters. So far, Ukrainian drones have laid about 15 underwater mines in the waters near temporarily occupied Crimea.

To date, four enemy ships have been blown up by these sea traps. Among them: a modern anti-mine ship, a missile corvette, a patrol boat, and a large tugboat. Through these actions, the SBU has demonstrated the world’s first successful example of remote mining. Until now, maritime drones have been used primarily for surveillance and logistics.

Meanwhile, the UK military is conducting field tests of radio frequency directed energy anti-drone weapons. This system disables a drone’s electronics and can shoot down several drones at once. The development is led by the French company Thales, which plans to create a joint venture in Ukraine. This weapon may appear on the market as early as 2025. With a cost of only 10 pence (about $0.12) and a range of up to one km, the system will be a cheaper alternative to traditional air defense.