NATO's top military commander said the alliance is “ready to fight tonight” if it is attacked, as European officials warn Russia could test NATO's defenses with increased covert attacks or a limited military incursion.

NATO’s top military commander declared the alliance is prepared to fight if attacked. During the Warsaw Security Forum in Poland, NATO’s Supreme Allied Commander U.S. General Alexus Grynkewich spoke

NATO must prepare for a deadly Russian hybrid attack, according to Poland's foreign minister. The warning came as concern grows about the Kremlin's intensifying sabotage campaign on European soil.  Radosław Sikorski told the FT that the probability of someone being killed was growing as Moscow multiplied its operations to disrupt and destabilise European societies.

Russia's invasion of Ukraine is reshaping NATO's defence technology priorities, with counter-drone systems and space-based ​surveillance emerging as some of the alliance's most ‌urgent capability gaps,

Russia has warned NATO it would be ready with nuclear weapons if the Western alliance cuts off Kaliningrad, a Russian exclave on the Baltic Sea.

NATO has begun its annual exercise to defend the alliance's territory with nuclear weapons. This was confirmed by a spokesperson for the military headquarters in Mons, Belgium. Forces from 17 countries are expected to participate in the "Steadfast Noon" exercise through the end of next week.

NATO commander issues warning as European officials have called for vigilance over potential Russian attacks.

NATO's top military commander warned Monday that what he called the "lethal alliance" would destroy "anything and everything" supporting an attack on allied territory and "break" enemy warfighting systems to thwart any potential future Russian assault.

The alliance’s new battle concept aims to deter aggression by showing it would be stopped quickly and at a high cost.