The warning marked a significant escalation in rhetoric between Moscow and the alliance. The diplomatic memo accused NATO of pursuing a “dangerous and reckless course” that carries a high risk of direct armed conflict. It specifically threatened that any confrontation could involve Russian strikes against “decision-making centers” in NATO member states from the outset. Russian Foreign Ministry spokeswoman Maria Zakharova separately accused NATO officials of demonstrating “Russophobia” and a willingness to wage war against Russia, stating that Moscow hoped its warnings would be taken seriously.
NATO responded swiftly to the allegations. Secretary-General Mark Rutte stated that NATO is a defensive alliance and called on Moscow to “stop the nuclear threats,” describing the diplomatic document as “absolutely not called for and not helpful.” Rutte downplayed the strategic threat, asserting that “Putin knows that he can never win” in a direct escalation with the alliance. In a separate official communication, NATO stated that none of its exercises or activities pose a threat to the territory of the Russian Federation. The alliance urged the Russian Federation to end its unprovoked full-scale invasion of Ukraine and to refrain from “increasingly reckless behavior” and “irresponsible nuclear rhetoric.”
Kaliningrad is a heavily militarized Russian territory located between NATO members Poland and Lithuania. Moscow has increasingly highlighted what it describes as threats to the exclave as NATO countries expand military activity in the Baltic region. Kremlin spokesman Dmitry Peskov said the message was directed at what he called “hotheads in Europe.” The exchange occurs amid already strained relations following Russia’s full-scale invasion of Ukraine in 2022.
European intelligence assessments suggest a broader pattern of increasing risk from Moscow. The Danish Defence Intelligence Service released a report in September noting that Russia has “intensified its use of sabotage, destructive cyber attacks and is attacking targets in Europe with drones.” The report concluded that “hybrid war is escalating,” citing a foiled drone attack in Germany which Berlin openly blamed on Moscow. The Danish agency warned of potential “sabotage on Danish soil against defence companies” and noted that Russia has “become more willing to take risks.”
The Danish report also assessed that Russia is under significant pressure, sustaining heavy battlefield losses and facing an economy “on the brink of a major crisis.” It stated there is no prospect of Russia achieving major breakthroughs in the war against Ukraine over the next six months. The agency suggested that Europe’s gradual development of autonomous military capability by 2030 poses an increasing threat to Russia, creating a “window of opportunity” for Moscow to attempt to change the European security order. The report identified a risk of limited military attacks or the deployment of forces, possibly without national insignia, into NATO countries bordering Russia, potentially to redirect European resources away from supporting Ukraine or to sow division within the alliance.
Moscow’s specific claims of an impending NATO blockade have not been independently verified. NATO has categorically denied preparing any such blockade, maintaining that its activities are strictly defensive. The diplomatic exchange highlights the continued high level of tension between the two blocs, with both sides exchanging sharp accusations regarding intent and capability.
