Denmark is receiving security assistance from North Atlantic Treaty Organisation (Nato) allies before a high-level meeting of European leaders in Copenhagen this week after a wave of drone incursions that authorities say may be linked to Russia.

Denmark's defense ministry said Sunday that it had again observed drones at several of its armed forces’ locations overnight, a day after the NATO alliance announced that it would enhance its vigilance in the Baltic Sea region.

NATO said the new measures include surveillance systems and a frigate, expanding the mission launched to protect Baltic Sea infrastructure.

From an engineering perspective it’s so much easier to build a drone that can fly than to build something that can keep them from flying,” said Kjeld Jensen of the University of South Denmark. That blunt observation now defines a growing security dilemma for Denmark and its NATO allies,

Denmark reported the latest in a series of drone sightings on Saturday, with the most recent incident occurring near military installations.

Denmark has no plans to invoke NATO's Article 4 clause on security consultations, its foreign minister said on Friday, after drone incursions shut down air traffic in various parts of the country several times this week.

Denmark’s defense ministry said that it had “several capacities deployed” after drone sightings from Saturday into Sunday night.

COPENHAGEN: Denmark has told its NATO allies that drone incursions which disrupted two airports this week were linked to a state actor, Latvia’s foreign minister said on Thursday (Sep 25), as Copenhag