Executive Summary
The 2026 Iran war (28 February to 8 April, 39 days) produced live evidence that mass precision strike with home-built production can impose meaningful costs even on a coalition with advanced air defenses. Iran fired around 1,471 ballistic missiles plus drones, damaging an early-warning radar at Al Udeid Air Base in Qatar around 3 March 2026. Patriot PAC-3 interceptors deployed by Gulf Cooperation Council partners performed at roughly 86 percent intercept against the inbound salvo. In January 2026, Lockheed Martin and the Pentagon announced a seven-year framework (2026 to 2032) to triple PAC-3 MSE production from about 600 to 2,000 missiles per year, with the higher rate due by 2030. The lesson for Lithuania: any defence that depends on receiving high-end allied interceptors during a crisis is structurally exposed. This is a gap Lithuania must close on Lithuanian terms, and the recommendation here is a study, not a prescription. The recommended next step is a cross-party Seimas working group, with input from the Ministry of National Defence, the Lithuanian Armed Forces General Staff, NATO Multi-Domain Headquarters Wiesbaden, and Polish and Ukrainian industrial partners, to scope a phased Baltic-anchored arsenal: home-built one-way attack drones, tactical FPVs, decoys, and cruise missiles, paired with a dedicated counter-drone and short-range air-defence layer to keep the launchers and factories alive. A budget envelope around 3.55 billion euros over five years (about 0.8 percent of GDP per year, drawn from the existing 4.79 billion euro 2026 defence budget at 5.38 percent of GDP plus EU SAFE allocation) is the planning anchor. The path forward — which platforms, which partners, what cross-border release authority, what NATO command-and-control protocol — is for the Lithuanian government, the Seimas, and NATO commanders to determine.
The Problem
Russian forces, operating through and from Belarus as the primary launch baseline, can begin significant operations within 24 to 72 hours of political decision. Vilnius is 35 kilometres from the Belarusian border; Kaliningrad places Russian forces 100 kilometres from the capital. The Suwalki Gap is the only land corridor connecting Lithuania to the rest of NATO through Poland. The temporal asymmetry between aggression in hours and NATO collective-defence response in days is exploitable. The legal predicate sits on airspace incursions, not the contested undersea-cable timeline: on 23 September 2025 the Seimas, after two Russian Gerbera drone incursions in summer 2025, authorised the Defence Minister or his delegate to order immediate engagement of drones in restricted Lithuanian airspace. The Eagle S case (Helsinki District Court, October 2025) was dismissed for lack of jurisdiction; the Vezhen case (Sweden, January 2025) was closed as accidental; attribution of the cable incidents to a state actor is not legally established and cannot anchor a proportionality argument.
Lithuania has no domestic precision-strike production. Current forces can delay but not impose strategic-level cost on a determined adversary staging from Belarus. The dependence on foreign interceptor resupply was empirically tested in the Iran war and found to be structurally exposed: the announced PAC-3 production ramp is a seven-year framework, not a four-year ramp. Russia is producing roughly 75,000 KAB glide bombs per year (RUSI 2025; Bulgarian Military February 2025) at 40 to 200 kilometre range from Belarusian and western Russian launch baselines, the binding survival-layer constraint against any fixed Lithuanian production or launch site.
Without action: An aggressor can calculate that rapid action through Belarus produces a fait accompli too costly for NATO to reverse. Lithuania remains dependent on external guarantees that may not arrive in time, with no plan B.
Lithuanian Context
Belarus is the primary operational adversary: Belarusian territory hosts the launch baseline for any strike on Vilnius, the airspace through which Russian strike aviation and drones transit, the road and rail network from which armoured thrusts toward the Suwalki Gap would stage, and forward electronic-warfare assets that degrade Lithuanian command-and-control and GPS. Russia is the second adversary. Belarusian critical infrastructure — the Mozyr and Novopolotsk refineries, the Belaruskali potash complexes, the Hrodna and Minsk transport hubs — would be first-priority targets because they impose cost on the Russian war machine without crossing into Russian sovereign territory. The September 2025 Seimas amendments authorise airspace engagement against drones in Lithuanian airspace; they do not authorise pre-delegated cross-border strike into Russia or Belarus. Any cross-border employment authority needs separate national-command legislation and a Presidential decree on the authentication architecture, with Constitutional Court input. NATO command-and-control would run through Multi-Domain Headquarters Wiesbaden, SHAPE notification, and the LITPOLUKRBRIG joint planning cell, with the German Brigade commander on Lithuanian soil as the in-theatre NATO authentication anchor — the specific protocol is a determination for the Lithuanian government and NATO commanders, not for this initiative to prescribe.
Vilnius 35 kilometres from Belarus, Kaliningrad 100 kilometres from the capital. Small territory enables comprehensive launcher dispersal; production facilities pushed west of Kaunas can sit beyond the 200-kilometre KAB envelope from the Belarusian border.