Mysterious drones have been spotted at night at airports across Europe. How worried should we be? First comes the warning, that disembodied voice over the tannoy: Your attention please. Please move to the shelter on the minus second floor. Then comes the mosquito-like whine of the incoming Russian drones, massing in their hundreds just above the clouds.

Danish PM calls for strong answer from EU leaders to Russia's hybrid attacks EU leaders have met in Copenhagen under pressure to boost European defence after a series of Russian incursions into EU airspace, and days after drones targeted Danish airports. Danish Prime Minister Mette Frederiksen told reporters that from a European perspective there is only one country... willing to threaten us and that is Russia, and therefore we need a very strong answer back. The incursions have become most acute for countries on the EU's eastern flank such as Poland and Estonia. A number of member states have already backed plans for a multi-layered drone wall to quickly detect, then track and destroy Russian drones. We meet at a time when Russia have intensified their attacks in Ukraine, where we have seen Russian airspace violations and unwanted drone activity in several European countries, Frederiksen told a news conference after the talks had concluded.

Can Ukraine restore its pre-war borders? Is Russia testing NATO with aerial incursions in Europe? EU to develop'drone wall' amid regional airspace violations European Union defence ministers have agreed to develop a "drone wall" along their borders with Russia and Ukraine to detect, track and intercept violations of their airspace, according to the bloc's defence chief. Friday's announcement comes after rogue drones entered Polish airspace on September 10, rattling eastern EU members. Although Danish authorities have not concluded their investigations, Frederiksen stressed that Russia was currently the primary threat to European security. The Kremlin has denied any involvement in the drone incidents in Poland and Denmark.