Explosive drones have become the IDF's biggest headache in southern Lebanon. But for many months now, a technology that could become a threat at any moment has been used in the Russia-Ukraine war, and there is no known solution for it either: piloting UAVs or drones by connecting them to a local cellular network. A former senior security official says all that is needed is to insert a local SIM card into the aircraft, and an operator sitting in Tehran can hit the window of an apartment.