For a state backed terrorist organization, the cost of drones could be even lower. Mass production and very low complexity of engineering will make it easy and

For a state backed terrorist organization, the cost of drones could be even lower. Mass production and very low complexity of engineering will make it easy and cheap to produce drones. Add to that, the cost of failure and innovation is also very less, consequently, the use of drones will increase exponentially. Just imagine what destruction a terrorist can create if he can launch a 100 drones, from miles away, to attack a filled stadium.