The reason is a series of increasingly brazen incursions into NATO airspace. On September 8, 21 Russian drones entered Polish territory, where some of them were shot down by an unprecedented Polish-German-Italian-Dutch military operation.

Officials say defending against drones is complex and requires affordable technology which can be quickly mass produced

UNITED NATIONS -- UNITED NATIONS (AP) — President Donald Trump said Tuesday that he believed Ukraine could win back all territory lost to Russia, a dramatic shift from the U.S. leader’s repeated calls for Kyiv to make concessions to end the war.

Russian drones are now targeting Nato members. As Russia is running out of troops, Russia's hybrid war is not just cost-effective; it's also a necessity.

Pistorius said two Russian Luch-Olymp reconnaissance satellites are tracking two Intelsat satellites that are used by, among others, the German armed forces.

Jeremy Pizzi, legal adviser at Global Rights Compliance, told Newsweek Russia "has even more horrendous behavior to hide from the world."

The US and Canada scrambled fighter jets to identify and intercept four Russian military planes off Alaska, amid growing concern over Moscow’s incursions into Nato airspace. The North American Aerospace Defense Command (NORAD) said it had detected and tracked two Russian Tu-95s and two Su-35s operating in the Alaskan Air Defence Identification Zone.

More unidentified drones were spotted over Denmark late Thursday near military airbases as a Russian landing ship, with its location responder turned off, was found loitering in waters off the Scandinavian country.