Loitering Munition

A loitering munition is an unmanned aircraft that carries a warhead and is itself the weapon. Unlike a conventional missile, which follows a planned trajectory to a pre-assigned target, a loitering munition can orbit an area for tens of minutes to several hours while its operator searches for, identifies, and selects a target. Once a target is confirmed, the aircraft dives onto it and detonates. The category spans hand-launched systems with a few kilometers of reach through tube-launched anti-armor designs to long-range one-way attack drones that strike fixed infrastructure hundreds of kilometers from the launch point.

The engineering trade is endurance against speed and survivability. Loitering munitions are generally slow and propeller-driven, built around a datalink that lets a human confirm the target before terminal attack; many designs allow the operator to abort and re-attack if the picture changes. That human-in-the-loop feature separates the category from simple cruise missiles and is central to how most armed forces regulate their use.

Cost matters as much as performance. Because the airframe is expendable, unit price shapes how widely they can be fielded, and cheap loitering munitions have become a standard tool against air defenses, artillery, and logistics. Countering them now drives much of the investment in short-range air defense and electronic warfare.