Not necessarily.
Iran has went into production of a knock off of the Lockheed RQ-170 stealth drone Obama gifted them, including a version reconfigured for use as a stealth cruise missile
The Iranian RQ-170 was recently shot down while being tested over Israel.
It proved to be a difficult target to hit by intercepting aircraft.
Correct. However, it was recently reported that this drone also carried explosives. It was designed as a terrorist attack. Apparently, Iran has now modified these drones to carry rockets and/or explosives designed for terror attacks, likely on Israel.