Ukrainian President Volodymyr Zelensky sent a five-page letter to President Trump and Congress on Memorial Day requesting Patriot missile systems and interceptor missiles, warning that deliveries through the current U.S.-backed program can no longer keep pace with the Russian ballistic missile threat bearing down on his country.
The letter, first reported by the Kyiv Independent and detailed by the New York Post, arrived days after Russia launched dozens of missiles, including three hypersonic ones, against Ukraine over the weekend. Moscow's foreign minister, Sergei Lavrov, had already warned Secretary of State Marco Rubio to evacuate U.S. personnel from Kyiv, signaling the Kremlin's plans for what it called "systematic and consistent strikes" against Ukrainian targets, including "decision-making centers."
That is the backdrop against which Zelensky chose to make his case, not with a press conference or a social media post, but with a formal written appeal to the two branches of the U.S. government that control the weapons pipeline.
Zelensky's letter acknowledged a hard truth: Ukraine still cannot build its own anti-missile defense systems. While his forces have achieved a drone interception rate above 90 percent, ballistic missiles are a different problem entirely. And the only real answer, Zelensky wrote, sits in American factories.
"Frankly, while we have achieved significant success in defending against all types of drones, Ukraine has not yet built its own capability to produce anti-missile defense systems."
He went further, making the strategic dependency explicit. Zelensky told Trump and Congress that Ukraine relies "almost exclusively on the United States" for ballistic missile defense, calling Patriot systems "the most effective defense against every type of Russian ballistic missile." The majority of Russian missiles, he argued, can be stopped, if the interceptors are there.
They aren't always there. The Washington Times reported a striking detail from the letter: Zelensky described the sight of "Patriot batteries with no missiles loaded," calling it one of the most painful things a wartime leader can witness. That image, a world-class weapons platform sitting inert because the ammunition hasn't arrived, captures the gap between what Washington has promised and what Ukraine has received.
The bottleneck runs through the Prioritized Ukraine Requirements List, or PURL, a program Trump championed as an alternative to the massive military aid packages of the Biden era. PURL allows NATO to purchase American firepower for Ukraine. Zelensky acknowledged the program but said its delivery pace has fallen behind.
"But the current pace of deliveries through the PURL program is no longer keeping up with the reality of the threat we face. We understand that today there is high demand for Patriot antiballistic missiles in other regions as well."
That last line is a diplomatic nod to the Iran conflict, which has strained U.S. Patriot supplies across multiple theaters. The same interceptors Ukraine needs are in demand elsewhere, a fact that complicates any quick fix. Concerns about munitions stockpile drawdowns tied to the Iran engagement have already surfaced in Washington policy debates.
Zelensky framed his request as a commercial transaction, not charity. He stated plainly that Ukraine is ready to purchase the Patriot systems and interceptors it needs. He also proposed expanding Patriot production with European allies, but under a process "fully under US control," a deliberate concession to American sovereignty over its own defense industrial base.
"Expanding Patriot production could become one of the most important contributions we make together to the security of America, Ukraine, Europe, and your allies around the world."
The pitch was calibrated for a White House that has been skeptical of open-ended military commitments. Trump has refrained from green-lighting massive military aid packages to Ukraine, favoring instead the PURL framework. The letter tried to meet that posture halfway, asking not for a blank check, but for a purchase order and a production ramp-up.
Zelensky also played the loyalty card. "After all we have been through together, have we not earned a place among your allies?" he wrote. And he offered something in return: praise for American hardware, tested under fire. "We know, because we have tested it in modern war, that American weapons work. They work exceptionally well."
Whether that flattery lands depends on a White House that has shown little appetite for expanding Ukraine's weapons pipeline. The administration has not publicly commented on the letter.
The Memorial Day letter did not arrive in a vacuum. The relationship between Zelensky and Trump has been strained for months. The Washington Examiner reported that Trump previously dismissed Zelensky's missile requests, questioning why Ukraine started a war against a much larger adversary. "I don't know, he's always looking to purchase missiles, you know... when you start a war, you've got to know that you can win the war, right?" Trump said.
That remark reflected a broader frustration with what the administration sees as an open-ended commitment with no clear endgame. And the European picture isn't encouraging either. The Examiner noted that only nine countries are now funding ammunition supplies for Ukraine, down from eighteen last year. The coalition that once rallied behind Kyiv is thinning.
Zelensky has tried to repair the relationship. After a contentious Oval Office meeting earlier in the conflict, AP News reported that Zelensky called the encounter "regrettable" and said, "It is time to make things right." He added: "My team and I stand ready to work under President Trump's strong leadership to get a peace that lasts." The White House had announced a pause in military aid following that meeting, a pause Ukraine reportedly had not even received direct notification about.
That pattern, Zelensky appealing, the White House staying quiet, has defined the dynamic. The five-page letter is the latest attempt to break through.
The urgency in Zelensky's letter tracks with real developments on the ground. Russia's weekend barrage of dozens of missiles, including hypersonic variants, demonstrated Moscow's willingness to escalate. Lavrov's warning to Rubio about evacuating U.S. personnel from Kyiv added a direct threat aimed at American interests, a signal that the Kremlin views the capital as a legitimate target zone.
Zelensky's letter noted that "the fate of many lives is being decided." That is not just rhetoric. Without interceptors loaded on Patriot batteries, Ukrainian cities face incoming ballistic missiles with no reliable shield. The broader diplomatic landscape, including Trump's efforts to tie an Iran peace deal to Israeli normalization, has stretched American attention and resources across multiple fronts simultaneously.
One bright spot Zelensky cited: Ukraine made "remarkable progress on the battlefield" after Elon Musk's Starlink satellite internet service set up a white list in February to cut off the Kremlin's access, scrambling Russian coordination efforts. That detail served a dual purpose, showing that American technology makes a measurable difference, and reminding Washington that private-sector tools are already shaping the war's trajectory.
But satellite internet does not stop a ballistic missile. Only a Patriot can do that. And the letter's core argument is that the supply of those interceptors has not kept pace with the threat.
By addressing the letter to both Trump and Congress, Zelensky opened a second front. Even if the White House stays silent, members of Congress now have a formal request on record, one that asks for expanded production, not just transfers from existing stockpiles. That distinction matters. Internal GOP tensions over defense policy have already surfaced in recent weeks, and a formal Ukrainian purchase offer could shift the debate from "how much are we giving away" to "how much are we selling."
The open questions are significant. How many Patriot systems is Zelensky actually requesting? What timeline does he envision for expanded production? And can the U.S. defense industrial base ramp up fast enough to serve Ukraine, the Iran theater, and America's own readiness needs at the same time?
None of those questions have public answers yet. The White House has not responded to the letter. Congress has not signaled how it will handle the request. And ongoing friction between Pentagon leadership and Capitol Hill over defense transparency adds another layer of uncertainty.
Zelensky's letter is, at bottom, a bet that American self-interest and Ukrainian survival still point in the same direction. He offered to pay. He praised the product. He proposed a framework that keeps Washington in control. Whether that is enough to move a skeptical White House remains the central question.
Empty Patriot launchers don't defend anyone. If Ukraine is willing to write the check, the real test is whether Washington has the will, and the inventory, to fill the order.
