Air-defence sustainment

Overview

This module treats air defence as a supply question rather than as a capability, because that is where its variation comes from. One-way attack drones are answered by anti-aircraft artillery, MANPADS, mobile fire groups, electronic warfare and cheap domestically produced interceptor drones — a layer Ukraine builds itself across more than twenty producers. Cruise missiles are answered principally by NASAMS and IRIS-T SLM, donated systems whose interceptor resupply is set abroad. Ballistic and quasi-ballistic missiles are answered by Patriot PAC-3 and SAMP/T only, a single narrow lane fed by production Ukraine neither owns nor is first in the queue for. Glide bombs are not an interceptor problem at all: the assessed counters are dispersal, electronic warfare and attacking the launch aircraft and their airfields. Because the four lanes do not substitute for each other, a good night against drones and a bad night against ballistic missiles are not a contradiction — they are the normal output of four separate supply systems.

Why it matters

Almost every question about what Ukraine can protect resolves into a question about which lane the threat arrives in. It also explains why the public argument about air defence is so often conducted in the wrong units: announcements about production expansion are not deliveries, and deliveries are not stocks. The distinction matters beyond the military file — the humanitarian record for July 2026 shows civilian casualties arriving through three different lanes at once, and no single supply decision would have addressed them together.

What depends on it

Asymmetric by lane, and that asymmetry is the strategic fact. The counter-drone layer is substantially domestic and is the only part of the system whose output Ukraine controls. The cruise-missile layer is entirely donated. The anti-ballistic layer is both entirely external and effectively single-source: PAC-3 MSE production is allocated globally with United States priority, 94 per cent of it funded through Foreign Military Sales, against an allied order backlog reported at more than 4,300 rounds — roughly seven years of output at 2025 rates. Ukraine is a customer in a queue it does not administer, and no operational substitute for that lane currently exists. One is being built: the FP-7.X interceptor, developed by Fire Point within the Freya system and adopted as the flagship project of a ten-state Integrated Anti-Ballistic Missile Coalition formed in July 2026. It reached guided flight testing in June 2026 and has not attempted an interception; its developers target a first successful intercept in mid-2027. It is recorded here as a dated attempt to change the dependence, not as a change to it — and, since its design is built around a German seeker, Norwegian command and control, European radars and NATO Link 16, success would relocate the dependency to Europe rather than remove it.

What disruption does

When a lane is constrained the effect does not spread evenly across the air war — it appears in that lane only. That is why the reported interception rate against one-way attack drones improved through 2026 while the reported rate against ballistic missiles stayed low: the two are not measuring one system. Because the anti-ballistic lane has no domestic substitute and no published stock figure, its condition can only be inferred from outcomes, and those outcomes are themselves difficult to read — Ukraine does not publish how many incoming missiles were engaged, so a low interception rate cannot be separated from a decision not to engage.

Nodes

Each node is a map marker this module already publishes, with its role in the system. Not a route: the list has no sequence and no geometry.

• Lviv logistics hub Regional hub · Logistics hub

  Stands here for the western transfer function through which donated materiel enters, rather than for any air-defence-specific facility. This record publishes no air-defence siting.

• Chop–Záhony crossing Border crossing · Border crossing

  The module's published western frontier marker. Everything donated crosses a European land border; the air-defence lane has no separate route.

• Kyiv Regional hub · Capital

Political implications

Places the most consequential lane of Ukrainian air defence inside another state's export-licensing decision, and inside a queue of other customers.

Military implications

Sets what can be protected, and against which threat class, independently of how many launchers are fielded.

Economic implications

Interceptor production is constrained by seeker and solid-rocket-motor capacity shared with other missile programmes, so expansion competes with other munitions rather than being additive.

Humanitarian implications

Which lane a strike arrives in determines whether it can be engaged at all, which makes air-defence supply a civilian-protection variable and not only a military one.

Actors with a stake

What remains unknown

• Ukrainian interceptor stock levels are not published for any system, and no figure is stated here. The only attributable public statement is a presidential remark that Ukraine holds substantially fewer anti-ballistic interceptors than a year earlier — a belligerent claim about a classified quantity.
• Delivery volumes to Ukraine are not published at system level by any supplier. The German federal government's itemisation is the only primary source separating delivered from planned support, and it is frozen at 17 April 2025 and covers one donor. There is no current, systematic public delivery record for Western military assistance.
• Ukraine does not publish attempted engagements, so reported interception rates have no denominator and cannot be treated as a measure of system performance.
• This record publishes no siting, no battery dispositions and no assessment of current coverage of any area or target class.
• No public evidence establishes that the FP-7.X interceptor has attempted, let alone achieved, a ballistic interception. Its test programme is reported by its manufacturer and has not been independently verified, and no production, contract or delivery is established.

Readings the evidence also supports

• Low reported ballistic interception can be read as interceptor scarcity, as Russian missile and trajectory adaptation, or as an engagement choice in which fewer incoming missiles are engaged at all. Specialist analysis has ranked adaptation above scarcity and has noted that the decline began before the shortages later cited for it; the module records the competing readings and does not select between them.
• Improvement in the counter-drone lane can be read as the effect of scaled interceptor-drone production or as a change in what Russia was launching, since decoy and strike types are counted together in the public reporting. Both are consistent with the published figures.

Listed because the record's own assessment is not the only one its sources permit — not as a hedge on the assessment above.