Recently, there have been a series of reports about unmanned aerial vehicles drones being spotted near airports in Europe.
At Munich Airport in Germany, there was a drone sighting on the night of the 2nd, and the airport was closed.
For this reason, 17 flights were unable to depart, affecting 3,000 passengers.
Another 15 flights had to be diverted to airports other than Munich.
Last week, it was announced that drones were spotted near several airports in Denmark, affecting many passengers.
Therefore, Denmark has completely banned drone flights ahead of the conference to be held in the capital, Copenhagen.
There is also news that Russian drones have entered the airspace of Poland and Romania.
Furthermore, there is also news that Russian fighter jets have violated Estonian airspace.
European countries are heightening their vigilance.