Loitering munitions
Expendable aerial weapons that loiter then dive-detonate on targets, deployed at scale in Ukraine and the Middle East and now embedded in US, Israeli, and Turkish standing doctrine.
Add to a list
No lists yet.
What it is
A loitering munition is a single-use aerial weapon that combines reconnaissance and precision strike in one expendable platform. It launches from a tube or catapult, flies to a designated area, and loiters, searching for a target before diving into it and detonating. Unlike a cruise missile, it can abort an attack and reacquire a different target; unlike a conventional drone, it is not recovered after use. The warhead is the vehicle. Key players fall into three tiers: established prime contractors (AeroVironment in the United States, IAI in Israel, STM Savunma in Turkey), state arsenals (Russia's ZALA Aero KUB-BLA line, Iran's Shahed series), and a growing tier of venture-backed start-ups fielding swarm-capable designs. SIPRI classifies these systems as missiles for arms-transfer tracking purposes.
History
The concept dates to Israel in the 1980s. IAI's Harpy, first delivered around 1990, was built for suppression of enemy air defences: it loitered over radar emissions and struck the emitter. Modern proliferation began with the 2020 Nagorno-Karabakh war, where Azerbaijan used Turkish Bayraktar TB2 strike drones alongside Israeli-supplied Orbiter 1K and Harop loitering munitions to destroy Armenian armour in under six weeks, the first documented case of a loitering-munition-enabled battlefield collapse. The Russia-Ukraine war, starting in February 2022, scaled the category dramatically. Russia imported Iranian Shahed-136 systems, rebranded Geran-2, and fired them in mass salvoes at Ukrainian power infrastructure. Ukraine fielded AeroVironment Switchblade 300 and 600 systems via US emergency transfers, then began producing domestic variants. By 2024, more than 20 countries were developing or actively fielding loitering munitions.
Current state
As of mid-2026, the global market is estimated at roughly US$5.4 billion annually, projected to reach US$13.3 billion by 2030 (19.9% compound annual growth rate) and US$29.5 billion by 2035. The United States has institutionalised the category in its ground forces. In February 2026, the US Army placed a US$186 million delivery order for Switchblade 600 Block 2 and 300 EFP anti-armour rounds under a five-year, US$990 million Lethal Unmanned Systems IDIQ contract. In May 2026, the Army selected the Switchblade 400 for its Low-Altitude Stalking and Strike Ordnance (LASSO) programme, giving brigade combat teams an organic beyond-line-of-sight strike weapon. The US Army is requesting approximately US$110 million for LASSO in fiscal year 2027, with US$1.2 billion planned for FY26-FY31. The US Marine Corps began fielding its Organic Precision Fires-Light system, the Switchblade 300 Block 20, to operational units in June 2026, the first organic loitering munition at US squad level. Israel, India, South Korea, Poland, and the United Kingdom are running concurrent procurement programmes.
Relationships
The US scales up Switchblade buys: Army LASSO pick, $186M order, Marine fielding in June node covers the US procurement cycle in full, including the LASSO selection, the US$186M February 2026 order, and Marine Corps fielding timelines. Shahed Drones covers the Iranian Shahed-136 / Geran-2 line, which travels a sanctions-evading state-to-state supply chain rather than the Western commercial market. FPV Drones covers modified first-person-view racing drones repurposed as cheap one-way strike weapons, a lower-cost parallel layer of the same tactical category. Drone Swarms covers coordinated autonomous attacks by multiple loitering systems simultaneously, the next step beyond single-unit employment. Army hands Anduril a $20B enterprise vehicle, opening with a counter-drone order covers the US Army's counter-UAS effort, a US$20 billion programme driven directly by loitering munition proliferation.
What to watch
- Whether the US Army LASSO programme and the Marine Organic Precision Fires-Light system survive FY27 budget scrutiny intact.
- Proliferation beyond state militaries: Hezbollah and Yemen's Houthi forces already operate Iranian-supplied variants, and secondary markets are growing.
- Regulatory gap: no multilateral treaty specifically governs loitering munition exports, even though SIPRI tracks them under existing missile classifications.
- Autonomous engagement: current systems require a human in the loop for final strike authority, but several active development programmes are testing fully autonomous terminal engagement, raising questions under international humanitarian law.