Six NATO members are planning to build a drone wall to protect Europe from Russian threats.
The drones will monitor the thousands of kilometres-long border that separates the nations from Russia.
The wall will also include anti-drone systems to neutralise enemydrones.

The goal is to use drones and other technologies to protect our borders .
against provocations from unfriendly countries and to prevent smuggling.
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The drone wall announcement follows news last week that Poland has joined theEuropean Sky Shield Initiative.
The war in Ukraine has ushered in anew era of aerial conflict, increasingly defined by drone warfare.
Story bySion Geschwindt
Sion is a freelance science and technology reporter, specialising in climate and energy.