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

The recent wave of mysterious drone sightings across Europe is the latest in a long history of similar scares. Clusters of UFO reports in Northern Europe have generated occasional panics for over a century. The European done sightings may be a projection of geopolitical tensions between Europe and Russia.

Denmark said drones that halted flights at its main airport on Monday were the most serious attack yet on its critical infrastructure and linked them to a series of suspected Russian drone incursions and other disruptions across Europe.

It wasn’t immediately clear who was behind the flyover. But Denmark’s prime minister and NATO’s secretary-general said Tuesday that Russian involvement couldn’t be ruled out.

Nato countries bordering Russia hope to build a “drone defence wall” to counter aerial threats. Read more at straitstimes.com. Read more at straitstimes.com.

President Donald Trump proclaimed emphatically early this week that Kyiv could win the war — and earn back all of its territory.

European NATO countries have reportedly told Moscow they are ready to respond to repeated violations of members' airspace, including by shooting down fighter jets

Russia has warned that it could go to war with the West if NATO shoots down Russian fighter jets if they breach European airspace again.