Kuleba’s May 2026 note maps Putin’s position as a strategic cul-de-sac with exactly three exits: continue the war, stop it, or take an unconventional step against a NATO member. The third path, a localized operation such as seizing Narva, would be designed to trigger turmoil in EU and NATO headquarters rather than to hold territory, proving their security guarantees empty.
The Narva Precedent
Kuleba’s May 2026 assessment names Narva, Estonia, as the model for the “unconventional step” Putin needs to escape his dead end. A company-sized seizure of the border city, population roughly 53,000 and overwhelmingly Russian-speaking, would not aim to hold ground. Its aim is to force a NATO Article 5 vote that Washington, under Trump, might refuse. Moscow then watches Brussels and the Alliance headquarters descend into paralysis. European leaders learn that their security guarantees are unenforceable.
The operation’s purpose is blackmail. Abandon Ukraine, or face the same turmoil in Latvia’s Latgale region or Lithuania’s Suwalki corridor. Mariupol’s destruction already equaled a tactical nuclear strike, so the psychological barrier to escalation has been tested once without crossing the nuclear line. Leaders still reading Putin’s rhetoric as posturing should note that he needs no full invasion of NATO territory. Only a foothold.
Mariupol as the Erased Red Line
By May 2022, Russian artillery, airstrikes, and ground fighting had reduced Mariupol to an estimated 90 percent of its buildings damaged or destroyed. Ukrainian officials reported over 20,000 civilians killed. Kuleba points to those figures and argues the physical result already matches the destruction of a tactical nuclear weapon, minus the blast, the fire, and the radiation. The threshold Western leaders treat as unthinkable has, in his reading, been crossed with conventional bombs and shells.
The NATO response stayed limited to sanctions and arms transfers. Leaders still betting on red lines are therefore protecting a distinction Putin has already erased on the ground. Moscow demonstrated in Mariupol that it can inflict nuclear-scale ruin on a Ukrainian city without triggering direct Western military retaliation. Kuleba sees no reason Putin would conclude from that experience that escalation is impossible. He sees every reason to conclude it is manageable.
The Gap Between Warning and Action
In August 2022, after Ukrainian strikes hit Saky airbase in Crimea, Jake Sullivan warned publicly that any Russian nuclear use would bring “catastrophic consequences.” The Biden administration backed that warning with CIA director Bill Burns’s November 2022 meeting with Sergei Naryshkin in Ankara. Burns reportedly laid out what those consequences would include. US officials also signaled through backchannels that a Russian tactical nuclear strike in Ukraine could trigger conventional cruise missile strikes on Russian positions.
Yet Mariupol had already been reduced to rubble equal in scale to a tactical nuclear weapon. The administration still withheld ATACMS. It still slow-walked F-16 training. It still capped strikes on Russian territory. The same president willing to threaten cruise missiles after a nuclear detonation would not authorize the weapons that could have collapsed Russian logistics in 2023. That gap is the problem. It tells Putin that American force exists only as a response to catastrophe, not as a prevention of it.
The Article 5 Trap
Kuleba is blunt about the mechanics of Article 5. In a direct Russian incursion into a NATO country, no NATO missile would fly at Moscow. The escalation taboo holds, even after Mariupol. Its physical destruction, he compares to a tactical nuclear strike. Only Ukrainian-made systems could reliably reach deep into Russia. That asymmetry quietly drives Putin’s local operation scenario.
A limited seizure such as Narva, designed to trigger turmoil in EU and NATO headquarters rather than to hold territory, exposes promises as unenforceable.
Biden’s 2022 nuclear diplomacy, including CIA backchannels and threats to strike Russian positions, showed Washington understood the stakes. Yet it stopped short of the decisive action that might have ended the war earlier. Any leader still betting on a diplomatic solution is betting on a NATO that has already signaled it will not fight for Europe. The moment is engineered to look too dangerous.
