The restriction had been a real constraint, and its removal opened new possibilities.
For over two years, the United States held a firm line against allowing Ukraine to strike Russian territory with American weapons, fearing the specter of escalation into something far larger and more catastrophic. On the final day of May 2024, that line shifted — narrowly but meaningfully — as President Biden authorized the defensive use of US-supplied arms in the Kharkiv region, where Russian forces had opened a second front and missiles were falling on civilian streets. The change was not a reversal of principle so much as a concession to reality: that the logic of restraint grows harder to sustain when the people it is meant to protect are being killed by the very attacks it forbids a response to.
- Russia opened a second front in Kharkiv in early May, and overnight strikes killed at least three civilians and wounded sixteen more, making the cost of inaction impossible to ignore.
- Allied nations had been pressing Washington with growing urgency, arguing that forbidding Ukraine from striking across the border was effectively tying one hand behind its back while it fought for survival.
- Biden's authorization is deliberately narrow — American weapons may now be used defensively in Kharkiv, but the prohibition on long-range offensive strikes deep into Russian territory remains firmly in place.
- Ukraine reportedly launched a significant missile and drone operation overnight, signaling that even a limited policy shift translates quickly into new tactical realities on the ground.
- The central tension remains unresolved: allied pressure to broaden the authorization continues, and the question of how far Washington will ultimately go hangs unanswered over the conflict.
For more than two years, Joe Biden had maintained an unwavering position: American weapons could not be used to strike inside Russia. The fear was escalation — that crossing that line might pull the war into something far more dangerous. But by the end of May, that position had cracked open, if only partially.
Two US officials confirmed the shift. Ukraine was now authorized to use American-supplied arms against Russian targets in the Kharkiv region, but strictly for defensive purposes. The ban on offensive long-range strikes deep into Russian territory remained. It was a narrow opening, not a transformation of policy.
The context made the change hard to avoid. Russia had launched a second front in Kharkiv at the start of May, and the pressure had been building ever since. Overnight, Russian missiles struck three sites within Kharkiv city, killing at least three people and wounding sixteen. The war, as ever, was not an abstraction — it was landing in neighborhoods, on civilians, in the middle of ordinary life.
Allied nations had been pushing back against the restriction for some time, arguing that Ukraine could not meaningfully defend itself if it was forbidden from striking the Russian positions from which attacks were being launched. The logic was difficult to counter, and the caution that had long governed Washington's approach was beginning to feel, to many allies, like a constraint on Ukraine's survival rather than a safeguard against wider war.
Officials were careful to define the limits of what had changed. This was not permission to strike Moscow or to target installations far from the front. It was permission to respond to the immediate threat in Kharkiv. Whether that narrow opening would remain narrow — or whether continued pressure would widen it — was a question the moment had not yet answered.
For more than two years, Joe Biden had held firm on a single rule: Ukraine could not use American weapons to strike inside Russia. The concern was straightforward and weighty—such attacks might provoke Moscow into escalating the war beyond its current, already devastating scope. But on the last day of May, that policy cracked open, at least partially.
Two US officials confirmed that Biden had authorized Ukraine to deploy American-supplied arms against Russian targets, though with a crucial limitation. The weapons could be used only defensively, specifically to protect the Kharkiv region from Russian assault. The ban on offensive strikes—on using long-range American missiles to hit targets deep inside Russian territory for strategic gain—remained in place. It was a narrow opening, not a wholesale reversal.
The timing mattered. Russia had opened a second front in Kharkiv at the beginning of May, and the pressure on Ukrainian forces there had been mounting steadily. The previous night, Russian missiles had struck three separate sites within Kharkiv city itself. At least three people were killed and sixteen more were wounded, according to local officials. The attacks were a reminder that the war was not some distant conflict but something that reached into civilian neighborhoods, into homes and streets where ordinary people lived.
Biden's shift did not emerge from nowhere. An increasing number of American allies had been pushing back against the restriction, arguing that Ukraine needed the ability to defend itself by striking at Russian positions and infrastructure across the border. The logic was difficult to refute: if Russian forces were launching attacks from inside Russia, why should Ukraine be forbidden from responding in kind? The constraint had always been rooted in caution about escalation, but that caution was beginning to feel, to many in the allied camp, like a constraint on Ukraine's own survival.
The officials were careful to emphasize what had not changed. The core policy—the prohibition on offensive operations using American long-range missiles—remained intact. This was not a green light for Ukraine to strike Moscow or to target Russian military installations hundreds of kilometers from the front lines. It was permission to use American weapons to push back against the immediate threat in Kharkiv, to defend territory and civilians under direct assault.
Meanwhile, Ukraine had reportedly launched a substantial missile and drone attack overnight, suggesting that the authorization, once given, was being put to use quickly. The details of that operation remained sparse, but the message was clear: the restriction had been a real constraint, and its removal—even in limited form—opened new tactical possibilities.
What remained uncertain was whether this narrow opening would hold or whether allied pressure would continue to widen it. The war in Kharkiv was not the only place where Ukraine faced Russian assault. The question of how far Biden would ultimately go in arming Ukraine's defense hung in the air, unanswered.
Citas Notables
The US policy calling on Ukraine not to use American-provided long-range missiles and other munitions to strike inside Russia offensively has not changed.— US officials
La Conversación del Hearth Otra perspectiva de la historia
Why did Biden wait so long to allow this? Ukraine has been fighting for over two years.
The fear was always about escalation—that any American weapon used inside Russia might trigger a wider conflict. But that logic only holds if you believe Moscow is watching for permission to expand. By May, it was clear Russia was expanding anyway, opening new fronts on its own timeline.
So the policy change is really just catching up to reality?
In a way, yes. The restriction was meant to be a firewall, but firewalls only work if the other side respects them. Russia didn't. It kept pushing, and Ukraine kept asking for tools to push back.
Why limit it to defensive use? Why not just let them use the weapons however they need to?
That's the question the allies are asking too. But Biden is still trying to draw a line—between defending territory you hold and striking deep into enemy territory. It's a distinction that may not hold for long.
What happens if Ukraine uses these weapons in ways Biden didn't intend?
That's the real tension. Once you authorize the use, you lose control over how it's deployed. The defensive-offensive distinction is blurry in practice. A strike that looks defensive to Kyiv might look offensive to Washington.
And Russia's response?
That's what Biden was always worried about. But Russia has already shown its hand—it's not waiting for American permission to escalate. The question now is whether Ukraine can defend itself effectively with the tools it's finally being given.