Brussels, Sept. 12 -- Several Nato members are sending troops, artillery and air defence systems to secure its eastern flank after what Poland called an unprecedented Russian drone incursion into its airspace.

In the early hours of Wednesday, three Russian drones were shot down after crossing into Polish airspace, reports BBC.

While other drones crashed to the ground and were later found across eastern Poland.

Poland has requested a UN Security Council session about the incident, which will take place on Friday evening at 7 pm GMT.

In response to the drone incursion, the Netherlands and the Czech Republic said they would send defences to Poland, while Lithuania would receive a German brigade and greater warning of Russian attacks on Ukr...