EU countries on Friday will hold their first talks on proposals to build a "wall" of anti-drone defences, after air incursions from Russia rattled eastern members.
The threat to Europe's airspace has been heightened by unidentified drone flights in recent days that have shut airports in Denmark.
EU chief Ursula von der Leyen made a first call for a "drone wall" in a keynote speech earlier this month, hours after NATO shot down Russian drones in Poland.
She said it should be "a European capability developed together, deployed together, and sustained together, that can respond in real time."
"This is not an abstract ambition," von der Leyen said.
European defence commissioner Andrius Kubilius will seek to put flesh on the hastily-drawn up proposals when he holds video talks Friday with