We don't know their intentions obviously.
In April 2021, President Biden placed a call to Vladimir Putin that embodied the central tension of great-power diplomacy: warning of consequences while extending an invitation to dialogue. The backdrop was a Russian military buildup along Ukraine's border — the largest since the annexation of Crimea in 2014 — that had alarmed NATO allies and raised the specter of renewed conflict in a region already scarred by seven years of proxy war and roughly 14,000 deaths. Biden's gesture captured something ancient in the grammar of statecraft: that nations must sometimes speak in two voices at once, one firm and one open, hoping the other side is listening to both.
- Russia has massed its largest military force on Ukraine's border since 2014, complete with field hospitals and jamming equipment, and no credible explanation has been offered for the scale of the operation.
- The buildup has spiked cease-fire violations in eastern Ukraine and sent genuine alarm through Washington and NATO capitals, with officials privately warning that a full-scale invasion cannot be ruled out.
- Biden delivered a dual message to Putin — threatening economic and diplomatic consequences for cyberattacks and election interference, while simultaneously proposing a face-to-face summit in a neutral third country.
- The Kremlin's response was deliberately ambiguous, neither accepting nor rejecting the summit offer, and instead releasing a statement that emphasized routine diplomatic topics as if the military crisis were a minor footnote.
- American options remain frustratingly narrow — weapons supplies and sanctions are already in play, and officials can only promise unspecified 'costs' and 'consequences' without elaborating on what leverage remains.
- The entire exchange is shadowed by Biden's recent 'killer' remark about Putin, which forced a diplomatic rupture even as the administration insists the two countries must find ways to coexist and cooperate.
On a Tuesday morning in April, President Biden called Vladimir Putin — the same man he had publicly called a killer just weeks before — to deliver a message that was equal parts warning and invitation. With Russia having assembled its largest military concentration on Ukraine's border since the 2014 annexation of Crimea, Biden urged de-escalation while simultaneously proposing a summit in a neutral country. It was the kind of contradiction that serious diplomacy sometimes demands.
The scale of the Russian buildup was difficult to dismiss as routine. Field hospitals had been erected near the border, radio jamming equipment deployed, and Russian media was flooding the region with anti-Ukraine messaging. Secretary of State Blinken, meeting with NATO allies in Brussels that same day, described the situation as deeply concerning. A senior State Department official acknowledged plainly that American officials did not know what Moscow intended — only that the preparations looked like something far more than exercises.
Biden's call covered two distinct registers. He warned Putin that hostile actions — cyberattacks, election interference — would bring firm American responses, while also extending the olive branch of direct talks. The Kremlin's reply was characteristically guarded: no confirmation of the summit, but a readout that listed arms control, Iran, Afghanistan, and climate as topics discussed, projecting an air of normalcy that the military reality on the ground did not support.
The human weight behind the diplomacy was considerable. The Russian-backed insurgency in eastern Ukraine had already claimed around 14,000 lives since 2014, and recent weeks had seen a surge in cease-fire violations. Biden had spoken with Ukrainian President Zelensky two weeks earlier to reaffirm American support, and the administration was now working to align with NATO partners on a coordinated response should Russia move.
Yet American leverage had clear limits. Weapons deliveries and sanctions were already underway, and when pressed on what more the U.S. might do, officials offered only vague references to 'costs' and 'consequences.' Whether Putin would accept the summit invitation remained unanswered. What was not in doubt was that the largest Russian military presence on Ukraine's border in seven years was still there, waiting.
On a Tuesday morning in April, President Biden picked up the phone to speak with Vladimir Putin—the same man he had called a killer just weeks before. The conversation was a study in contradiction: Biden warned the Russian president against military aggression while simultaneously inviting him to sit down for talks in a neutral country. It was a delicate balance, the kind diplomacy sometimes requires when the stakes are high and the trust is nonexistent.
The immediate trigger for the call was unmistakable. Russia had massed its largest concentration of troops along Ukraine's border since 2014, when it had seized Crimea and annexed the territory outright. Now, seven years later, the buildup was impossible to ignore. Secretary of State Antony Blinken was in Brussels that same day, meeting with NATO allies and Ukrainian officials, describing what he saw as a cause for deep concern. The numbers alone were alarming: field hospitals erected in the border region, radio jamming equipment deployed, and Russian media flooding the zone with anti-Ukraine propaganda. A senior State Department official, speaking anonymously to reporters, said the Russians had offered no credible explanation for the scale and cost of the operation. "We don't know their intentions obviously," the official said, but the preparations suggested something more than routine exercises.
Biden's message to Putin was firm on one front and open on another. The White House statement said he had voiced concerns about the military buildup in Crimea and along Ukraine's borders, and called for de-escalation. He also made clear that the United States would respond with force—not military force, but economic and diplomatic consequences—if Russia continued what Biden saw as hostile actions: cyberattacks, election interference, the full toolkit of modern aggression. Yet in the same breath, Biden proposed a summit. The two leaders would meet in a third country, the White House said, to discuss their differences. It was an olive branch extended to a hand that was, at that moment, clenched into a fist.
The Kremlin's response, released hours later, was characteristically opaque. Russia did not confirm whether Putin would accept the summit invitation. Instead, it said the two presidents had exchanged views on Ukraine's internal political crisis and that Putin had outlined his approaches to a political settlement. The Russians mentioned discussions on arms control, Iran's nuclear program, Afghanistan, and climate change—a list designed to suggest that despite the tensions, normal business could continue. But the military reality on the ground told a different story.
Ukraine had been paying the price of Russian aggression for years. The insurgency backed by Moscow in eastern Ukraine had claimed roughly 14,000 lives since 2014. In recent weeks, cease-fire violations had spiked, and the troop movements at the border had U.S. and European officials genuinely worried that a full-scale invasion might be coming. Two weeks before the Biden-Putin call, Biden had spoken with Ukrainian President Volodymyr Zelensky to express American support. Now, with Blinken in Brussels, the administration was working to coordinate with NATO allies on how to respond if Russia moved.
The problem was that America's options were limited. The Trump administration had already begun supplying Ukraine with weapons, and the U.S. had imposed sanctions on Russian government officials, companies, and oligarchs close to Putin. Beyond that, officials were vague. When pressed on what additional steps the U.S. might take, Philip Reeker, the acting assistant secretary of state for Europe, would only say that there would be "costs" and "consequences" if Russia acted recklessly. White House press secretary Jen Psaki declined to elaborate further, saying only that plans for a summit were in early stages and that Biden wanted the relationship with Moscow to be "honest and candid" rather than adversarial, even as the two countries remained fundamentally at odds.
The timing of Biden's "killer" comment—made in an interview just weeks before—hung over everything. Moscow had been angry enough to recall its ambassador. The administration had defended Biden's bluntness as honest, while also insisting that the U.S. and Russia needed to find ways to work together. It was a contradiction that mirrored the entire approach: warn and threaten, but also talk and propose meetings. Whether Putin would accept the summit invitation remained unclear. What was clear was that the largest Russian military concentration on Ukraine's border in seven years was not going away, and neither were the questions about what Moscow intended to do with it.
Notable Quotes
We're now seeing the largest concentration of Russian forces on Ukraine's border since 2014, and that is of deep concern not only to Ukraine, but to the United States, and indeed to many of our allies and partners.— Secretary of State Antony Blinken
The Russian buildup is taking place not only along the border of Ukraine, but along the border of the democratic world.— Ukrainian Foreign Minister Dmytro Kuleba
The Hearth Conversation Another angle on the story
Why did Biden invite Putin to a summit right after warning him?
Because the alternative—complete breakdown—serves no one. You can't deter someone you're not talking to. The summit is a way of saying: we see what you're doing, we're serious about consequences, but we're not closing the door.
But didn't Biden just call him a killer?
Yes. And that's the tension. Biden was being honest in a way previous presidents weren't. But honesty doesn't mean you stop diplomacy. It means you do diplomacy with your eyes open.
What does the military buildup actually mean? Is Russia about to invade?
No one knows for certain. That's what makes it so dangerous. The field hospitals, the jamming equipment, the disinformation—it all *could* be preparation for invasion. Or it could be a show of force, a negotiating tactic. Russia won't say. And that uncertainty is itself a weapon.
Why are American options so limited?
Because Ukraine isn't a NATO member. If it were, an attack would trigger Article 5, and the U.S. would be obligated to fight. Instead, the U.S. can supply weapons and impose sanctions, but it can't directly intervene. That's the gap Russia is exploiting.
So the summit is really about buying time?
It's about keeping channels open while you figure out what Russia actually wants. Sometimes the conversation itself is the point—it tells you whether the other side is serious about negotiating or just stalling while it prepares for something else.
And if Russia invades anyway?
Then Biden's vague promises of "consequences" become very real, very fast. But by then, it's too late for Ukraine.