European Commission President Ursula von der Leyen warned against Moscow’s recent provocations, citing a surge in drone sightings over Denmark. Ten member states have already backed plans for a multi-layered “drone wall” to quickly detect, then track and destroy Russian drones. As host to dozens of European leaders over two days, Denmark will want to fend off any more unwelcome surprises in its air space. Prime Minister Mette Frederiksen has said there is “primarily one country that poses a threat to Europe’s security – that is Russia”. The plans will then be worked on with Nato before EU leaders meet again later this month.