How reliant is Ukraine on US support – and could Kyiv carry on without it?
Ukraine’s War Effort Faces a New Test as US Support Comes Under Strain
Healfromzero.com – Ukraine is confronting renewed uncertainty over its relationship with Washington while Russian attacks continue to inflict damage and pressure on civilian areas. Friction between President Donald Trump and Ukrainian President Volodymyr Zelensky has revived questions about how far Kyiv can sustain its defense if American support becomes less reliable.
The latest dispute follows criticism from Trump that Zelensky had not done enough to negotiate an end to the conflict. Kyiv, meanwhile, has voiced alarm over delayed military supplies. Efforts by the US president’s envoys to advance diplomacy in Norway and Russia produced a plan to restart three-way discussions, but no clear breakthrough toward ending the war Russia began with its full-scale invasion in 2022.
For Ukraine, the immediate concern is not simply diplomatic tone. It is whether delays in weapons, intelligence and air-defense equipment could expose its cities and forces to greater danger.
Financial Support Has Shifted Toward Europe
The Trump administration stopped issuing new aid packages for Ukraine’s war effort at the start of 2025. Before that point, the United States had committed at least $131.5 billion in overall assistance, making it the largest individual contributor to Ukraine since the invasion began, figures from Germany’s Kiel Institute for the World Economy show.
Some equipment ordered from US manufacturers during the Biden administration is still reaching Ukraine, although many of those contracts have now been completed. The broader funding picture has changed significantly: European Union countries and EU institutions together have supplied at least $228.5 billion since 2022.
Germany, Denmark, the Netherlands and Sweden have been among the leading EU contributors of military support. Outside the bloc, the United Kingdom and Norway have also provided substantial assistance. Europe’s larger collective contribution has helped Ukraine weather the loss of new American aid packages, while Kyiv has accelerated development of its own defense-production capacity.
Even so, Europe’s financial role does not mean it can seamlessly replace every capability once supplied by the United States. Many European governments purchase American-made weapons before transferring them to Ukraine. Those transfers require approval from the Pentagon, giving Washington influence over equipment that allies have already paid for.
Patriot Shortages Highlight a Critical Dependency
Air defense remains one of Ukraine’s most urgent vulnerabilities. Zelensky said Friday that deliveries of Patriot interceptors intended to protect against Russian ballistic missiles had still not arrived.
The delivery of interceptors to protect us against Russian ballistic missiles is still delayed. We are waiting for interceptors that were already agreed on, but they are still not coming.
Ukraine exhausted its supply of Patriot interceptors last week. The system is among the limited number of defenses capable of destroying ballistic missiles before they strike. During an overnight attack on Kyiv leading into Thursday, none of the incoming ballistic missiles were intercepted, suggesting that Patriot supplies remained depleted or dangerously low.
The consequences are measured not only in military terms. When air defenses cannot engage incoming missiles, residential neighborhoods, energy infrastructure and essential public services face a higher risk of being hit. Civilian confidence can also erode when communities receive less warning or have fewer options for protection.
Speaking after the attack, Zelensky described two immediate priorities for Ukraine’s partners:
Not to lift sanctions from Putin … (and) to give us better missiles.
American weapons purchases also benefit US defense manufacturers, a factor that may limit any prolonged effort to obstruct allied orders. Yet even temporary interruptions can be highly consequential for a country defending itself against frequent missile and drone strikes.
Intelligence and Technology Are Harder to Replace
Ukraine’s dependence on the United States extends well beyond direct financial aid. American intelligence, early-warning capabilities and specialized technology remain central to the country’s ability to anticipate attacks and coordinate defenses.
There is no straightforward European substitute for several US systems, including Patriot interceptors, Starshield — the military version of Elon Musk’s Starlink satellite internet service — and advanced missile-warning technology. These assets provide capabilities built over decades and closely integrated with American military infrastructure.
Max Bergmann, director of the Russia program at the Center for Strategic and International Studies in Washington, has argued that European governments were discouraged for years from developing comparable systems because they depended on US protection.
That is something Europeans don’t have, and they don’t have it because we have told them for the last 30 years not to develop it … because they can rely on us.
That gap matters because communications, surveillance and early warning can shape whether civilians have time to reach shelters and whether Ukrainian forces can respond effectively to incoming threats. Zelensky said Ukraine had, on several occasions, received no US intelligence warning before ballistic strikes. In such cases, Russian missiles could land without the familiar air-raid alerts that normally send people toward bunkers.
Could Ukraine Continue Without Washington?
Ukraine has already shown that it can adapt to a reduced flow of US assistance. European aid, domestic weapons production and the determination of Ukrainian society have helped prevent a complete collapse in support. But continuing the war without dependable access to key American systems would impose serious costs.
Bergmann warned that a deeper rupture could bring major economic harm, more civilian casualties and further displacement. At the same time, he questioned whether pressure from Washington would force Ukraine to abandon its resistance.
We’re in a situation where America is proving to everyone in Europe that it simply can’t be relied upon.
This could be really devastating for Ukraine in the sense that it could cause tremendous economic damage, tremendous loss of civilian life, civilians leaving. But I doubt it’s going to actually break Ukraine’s will to fight.
The central issue is therefore not whether Ukraine could continue fighting at all, but what price it would pay for doing so with fewer American tools. Europe has become more important to Ukraine’s survival, yet US military technology, intelligence and authorization over weapons transfers still leave Washington with powerful leverage at a moment when Ukraine’s air defenses are under exceptional strain.
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