Top NATO commander set to issue warning to Russia over any attack

U.S. Gen. Alexus Grynkewich will elaborate on his "theory of victory" over any potential attack

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Published Oct 11, 2026  •  2 minute read

The move from the top military commander comes as NATO seeks to send a message to Moscow to halt what western officials say is a "hybrid" campaign of sabotage and interference against Ukraine's backers. Photo by NICOLAS MAETERLINCK /Belga/AFP

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BRUSSELS — NATO’s top military commander is expected to deliver a warning to Russia on Monday over the alliance’s ability to counter any attack as worries grow over the threat from Moscow.

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NATO officials have said U.S. Gen. Alexus Grynkewich — the alliance’s supreme allied commander Europe — will elaborate his “theory of victory” over any potential attack at a security conference in Warsaw.

The move from the top military commander comes as NATO seeks to send a message to Moscow to halt what western officials say is a “hybrid” campaign of sabotage and interference against Ukraine’s backers in the war against Russia.

Fears have grown in recent months that the Kremlin is stepping up its actions after high-profile incidents including the discovery of an explosive-laden drone at a German airport.

“The supreme allied commander Europe’s theory of victory is simple: Maintain NATO’s advantage, which is consistent with and grounded upon the alliance’s deterrence and defence plans,” Col. Martin O’Donnell, a spokesman for the U.S. general, said last week.

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“But given the unsettled and complex global security environment, we need to set conditions now to deter aggression and, if necessary, win if attacked,” O’Donnell said, noting the theory sets out a framework to do just that.

NATO — which was founded in the wake of the Second World War to counter the Soviet Union — traditionally closely guards its defence plans to counter any attack by Russia.

Grynkewich’s intervention looks unlikely to divulge many new details on NATO’s strategy and is intended to both send a signal to Moscow and reassure members on the alliance’s eastern flank.

NATO insists it remains a defensive alliance and has no intention of attacking Russia.

Western officials say that Moscow’s “hybrid attacks” have become more reckless as the Kremlin’s forces are stalled in Ukraine and that they risk causing significant loss of life.

The alliance — whose primary purpose is deterring an armed Russian invasion — has struggled to work out how to cope with incidents in the grey zone beneath open conflict.

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NATO civilian head Mark Rutte has urged countries to keep “calm, carry on and support Ukraine.

“We should not be naive … about Russia, but they know we are stronger,” Rutte said last month.

But the uptick in Russian activity comes at a time of potential vulnerability for Europe. Allies are currently bracing for possible cuts to U.S. forces in Europe as the Pentagon conducts a review of its deployments on the continent.

The results of the process are expected to be announced toward the end of the year.

European countries are already rushing to bolster their militaries as doubts have soared over the reliability of the U.S. under President Donald Trump.

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