Russia appears to have been deterred by NATO's firm response last month to incursions into Polish and Estonian airspace, but Moscow is expected to continue testing boundaries, the U.S. general serving as NATO's top commander said on Tuesday.

EXCLUSIVE: A NATO expert has revealed the key sign which proves to him that the alliance, the US and the West are not prepared for a drone war with Russia.

Russia says the 9M730 Burevestnik (Storm Petrel) - dubbed the SSC-X-9 Skyfall by NATO - is "invincible" to current and future missile defences, with an almost unlimited range and unpredictable flight path.

Recent Russian drone violations into NATO airspace have sparked a new sense of urgency for the alliance to acquire low-cost defenses.

"What a change from the 1984 Tom Clancy novel The Hunt for Red October. Today, it seems more like the hunt for the nearest mechanic," NATO Secretary General Mark Rutte said.

DIVISIONS of troops, battalions of tanks, squadrons of aircraft, and fleets of warships – war is a numbers game. With tyrannical Putin’s war raging in Ukraine, here The Sun breaks down

A Dutch F-35 has a drone-shaped kill marking after engaging Russian drones over Poland.

Wall St. Insights NATO was founded in 1949 for the collective self-defense of the Western allied countries against Soviet expansionism.  For Russia to join, it would have to experience a political and social transformation that would make it fully cooperative and non-threatening to the alliance—an unlikely scenario.