Ukraine urgently needs more Patriot interceptors to defend its cities and infrastructure against Russian ballistic missiles, but supplies are becoming tighter among its allies. Sweden is responding by investing in new European production while continuing to finance US weapons for Ukraine.
Estimates cited by Reuters suggest that around 65 per cent of the US stock of Patriot interceptors was used between February and July 2026. The estimated inventory fell from about 2,330 missiles to fewer than 850 during that period.
US Patriot interceptor stocks have fallen sharply
Patriot is one of the most important air defence systems available to Ukraine, particularly against ballistic missile attacks.
But Patriot is not a single type of missile. The system can use several different interceptors, with different capabilities.
Raytheon, part of RTX, produces the PAC-2 Guidance Enhanced Missile-Tactical, better known as GEM-T. It can engage aircraft, cruise missiles and tactical ballistic missiles.
Lockheed Martin produces the more advanced PAC-3 Missile Segment Enhancement, or PAC-3 MSE. It uses hit-to-kill technology and is designed for more demanding targets, including ballistic missiles.
The difference has become important as Ukraine asks its allies for more ammunition.
According to estimates from the Center for Strategic and International Studies cited by Reuters, about 65 per cent of the US Patriot interceptor stock was expended between February and July 2026. Fewer than 850 interceptors were estimated to remain, compared with around 2,330 before the intensified Middle East conflict.
These figures concern interceptor missiles, not Patriot batteries or launchers.
The exact size of US military inventories is classified, and the figures are estimates rather than official Pentagon stock numbers.
Demand has also increased outside Ukraine. Reuters reports that large quantities of advanced air defence ammunition have been used in the Middle East, while European countries that previously transferred some of their own missiles to Ukraine must also maintain sufficient stocks for their national defence.
Sweden wants US production to increase
Swedish Defence Minister Pål Jonson says production capacity is now part of the problem.
Speaking to Dagens Nyheter, Jonson said there are reasons for the United States to increase production.
Sweden operates Patriot itself, where the system is known as Luftvärnssystem 103. The country therefore has to balance its own air defence requirements with its support for Ukraine and the wider need to rebuild NATO ammunition stocks.
Stockholm has already chosen to address the problem through a major multinational purchase.
On 15 November 2024, the Swedish Government announced that Sweden would join Germany, the Netherlands, Romania and Spain in the joint procurement of up to 1,000 Patriot GEM-T missiles.
The total order was valued at approximately SEK 60 billion.
Sweden’s part of the procurement is worth more than SEK 5 billion.
A new Patriot missile production line is being built in Germany
The multinational order is also intended to increase production capacity inside Europe.
NATO announced the wider procurement framework in January 2024. The contract supports the establishment of a Patriot missile production facility in Germany.
Production is being developed in Schrobenhausen by COMLOG, a joint venture between Raytheon and MBDA Deutschland.
The importance of that facility increased further in April 2026.
RTX announced a $3.7 billion contract to supply GEM-T interceptors to Ukraine, saying the German facility is expected to play an important role in fulfilling the order and strengthening the supply chain.
The expansion gives Europe an additional source of Patriot ammunition instead of relying entirely on production in the United States.
It does not, however, mean that every Patriot ammunition shortage is solved.
GEM-T and PAC-3 MSE are different interceptors. GEM-T is capable of engaging tactical ballistic missiles, but it is not the same missile as the more advanced PAC-3 MSE used against some of the most demanding ballistic threats.
Increasing GEM-T production therefore strengthens both European and Ukrainian air defence, but it does not remove the need for other Patriot interceptor types.
Sweden is also financing US weapons through PURL
Sweden is supporting Ukraine through another route: the Prioritised Ukraine Requirements List, or PURL.
The programme allows participating countries to finance packages of high-priority US defence equipment for Ukraine. The United States makes the equipment available, while allies and partner countries provide the funding and NATO administers the mechanism.
On 18 June 2026, the Swedish Government announced another Swedish contribution of $108 million.
It was Sweden’s fourth contribution to PURL.
The government said this brought Sweden’s total financial contribution to the programme to $543 million.
“Through the PURL initiative, Ukraine gains access to high-priority American defence materiel, including advanced air defence systems and ammunition,” Jonson said when the latest contribution was announced.
PURL does not mean that Sweden itself manufactures or supplies all of the weapons covered by the packages. Sweden provides financing that allows Ukraine to receive priority US-made military equipment.
Production is becoming as important as existing stockpiles
The growing shortage highlights a wider problem for Ukraine and NATO countries: advanced interceptor missiles cannot be replaced quickly simply by allocating more money.
Patriot production depends on specialised factories, components, trained workers and complex supply chains.
Reuters reports that the US Army awarded Lockheed Martin a contract worth up to $58.6 billion in July to increase production of Patriot interceptor missiles.
Demand is global. RTX says Patriot is now operated by 19 countries, while several existing users are trying to replenish or expand their missile inventories.
Sweden is therefore pursuing several approaches at the same time: strengthening its own air defence, participating in large European ammunition orders and financing priority US equipment for Ukraine.
According to the Swedish Government’s latest figures, Sweden had provided around SEK 156 billion in military and civilian support to Ukraine by 12 August 2026, including approximately SEK 128 billion in military support.
The growing pressure on Patriot stocks means that future support will increasingly depend not only on which countries are willing to transfer missiles, but also on how quickly the US and European defence industries can produce replacements.
