Denmark is receiving security assistance from NATO allies ahead of 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.

Drone overflights again caused disruptions at Danish airports on Wednesday night, officials said, in the latest instance of unexplained drone sightings.

Following repeated drone alerts in Denmark, the government in Copenhagen said on Monday it is facing a new reality. Since Thursday, there have been no significant disruptions to Danish air traffic, Justice Minister Peter Hummelgaard said at a press conference.

In the wake of a wave of drone incursions that authorities say may be linked to Russia, Denmark is receiving security assistance from NATO allies ahead of a gathering of European Union leaders in Copenhagen this week.

Denmark's defense ministry reports increased drone activity at military sites amid security concerns. The prohibition on civilian drone flight has been enacted ahead of the EU summit in. NATO and Danish officials heighten vigilance,

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

Denmark bans drone flights while ‘brutal’ attack on Kyiv kills four - Nato member says it is in 'difficult security situation' amid unexplained drone activity ahead of EU meeting

The Russian invasion of Ukraine should have already led to better drone defenses in Europe. Now, the recent incidents in Poland, Denmark and other countries continue to be a wake-up call.