NATO on Friday launched an operation named Eastern Sentry to bolster the defence of Europe's eastern flank in response to Russian drone incursions into Polish airspace earlier this week, Secretary-General Mark Rutte said.

"Eastern Sentry is not just a new initiative – it is a clear signal: NATO’s borders are inviolable, and the security of our citizens remains a priority," Poland's General Staff wrote on X.

NATO has launched an initiative to reinforce the defense of Europe’s eastern flank after a Russian drone incursion into Polish airspace this week, NATO Secretary-General Mark Rutte announced on Friday.

More Nato countries will move troops and fighter jets eastwards after more than a dozen drones entered Polish airspace on Wednesday. Denmark, France and Germany have joined a new mission to bolster the military alliance's eastern flank. Other Nato allies are expected to take part later.

The General Staff of the Polish Army has reported that NATO's Eastern Sentry operation to strengthen its eastern flank after Russian drones fell in Poland has effectively begun. Source: European Pravda with reference to Polish news portal RMF FM Details: The Polish General Staff has released special footage of the landing of a French A400 transport aircraft in Minsk Mazowiecki.

NATO has launched a new operation, Eastern Sentry, after Russian drones entered Polish airspace. Fighter jets and troops are being deployed along the alliance's eastern border amid rising tensions and ongoing military activity near Ukraine.

The NATO mission Eastern Century will involve an array of troops and capabilities from several allied countries to defend the alliance’s eastern flank.

EADaily, September 13th, 2025. The North Atlantic Alliance is launching Operation Eastern Sentry ("Eastern Guardian"), the purpose of which is to strengthen the defense of the eastern flank of the military bloc.

NATO says it's bulking up its defensive posture on its eastern flank bordering Belarus, Russia and Ukraine with new equipment.