It's worth bearing in mind that jamming can work - so long as there's something to jam. If a flying bomb (like the 'drones' the RF is getting from Iran) is sent off with target coordinates and left to navigate there on its own (GPS/GLONAS or inertial navigation) There's no signal to jam. OTOH, if there was something that could project something that might fry circuit boards (e.g. EMP) that would work - but I'm pretty sure none exist.