Many would be surprised at just how tecnologically advanced radio controlled aircraft are in just the civilian sector. I fly RC helicopters, as well as fighter jets. The jets, which operated on a mini jet-turbine, are capable of in excess of 300mph for short stints and a sustained speed of 260mph. My BVM F'18 could launch and land five miles away in as little as 20 seconds. Unlimited by civilian radio range, the jet is capable of flying @ 260mph at an altitude of 50 feet for a distance of 45 miles in three minutes time. Luckily there is no military usefulness to the technology in a RC jet other than reconaissance since it's payload capacity is measured in ounces, not pounds. Cameras, autopilots, flight computers & payload delivery devices are all available at your local hobby shop or the internet. The point is, the technology is readily available with costs in the range of $3500 - $20,000us. It would be more than a bit surprising if Hizbollah wasn't using radar evading drones.
U.S.-led coalition conducts 11 airstrikes in Syria, 19 in Iraq against ISIS targets (Reuters)
from the article: IDF shoots down Hezbollah drone over sea near Haifa coast